Sequences
392,541 sequences
- Numbers with exactly 2 1's in their base 4 expansion.A023711
Numbers with exactly 2 1's in their base 4 expansion.
- Numbers with exactly 3 1's in their base 4 expansion.A023712
Numbers with exactly 3 1's in their base 4 expansion.
- Numbers with no 2's in their base 4 expansion.A023713
Numbers with no 2's in their base 4 expansion.
- Numbers with a single 2 in their base 4 expansion.A023714
Numbers with a single 2 in their base 4 expansion.
- Numbers with exactly 2 2's in their base 4 expansion.A023715
Numbers with exactly 2 2's in their base 4 expansion.
- Numbers with exactly 3 2's in their base 4 expansion.A023716
Numbers with exactly 3 2's in their base 4 expansion.
- Numbers with no 3's in base-4 expansion.A023717
Numbers with no 3's in base-4 expansion.
- Numbers with a single 3 in their base 4 expansion.A023718
Numbers with a single 3 in their base 4 expansion.
- Numbers with exactly two 3's in their base 4 expansion.A023719
Numbers with exactly two 3's in their base 4 expansion.
- Numbers with exactly 3 3's in base 4 expansion.A023720
Numbers with exactly 3 3's in base 4 expansion.
- Numbers with no 0's in their base-5 expansion.A023721
Numbers with no 0's in their base-5 expansion.
- Numbers with a single 0 in their base 5 expansion.A023722
Numbers with a single 0 in their base 5 expansion.
- Numbers with exactly 2 0's in their base 5 expansion.A023723
Numbers with exactly 2 0's in their base 5 expansion.
- Numbers with exactly 3 0's in their base 5 expansion.A023724
Numbers with exactly 3 0's in their base 5 expansion.
- Numbers with no 1's in their base-5 expansion.A023725
Numbers with no 1's in their base-5 expansion.
- Numbers with a single 1 in their base 5 expansion.A023726
Numbers with a single 1 in their base 5 expansion.
- Numbers with exactly 2 1's in their base 5 expansion.A023727
Numbers with exactly 2 1's in their base 5 expansion.
- Numbers with exactly 3 1's in base 5 expansion.A023728
Numbers with exactly 3 1's in base 5 expansion.
- Numbers with no 2's in their base-5 expansion.A023729
Numbers with no 2's in their base-5 expansion.
- Numbers with a single 2 in their base 5 expansion.A023730
Numbers with a single 2 in their base 5 expansion.
- Numbers with exactly two 2's in base 5 expansion.A023731
Numbers with exactly two 2's in base 5 expansion.
- Numbers with exactly 3 2's in base 5 expansion.A023732
Numbers with exactly 3 2's in base 5 expansion.
- Numbers with no 3's in base-5 expansion.A023733
Numbers with no 3's in base-5 expansion.
- Numbers with a single 3 in their base-5 expansion.A023734
Numbers with a single 3 in their base-5 expansion.
- Numbers with exactly 2 3's in their base-5 expansion.A023735
Numbers with exactly 2 3's in their base-5 expansion.
- Numbers with exactly 3 3's in their base-5 expansion.A023736
Numbers with exactly 3 3's in their base-5 expansion.
- Duplicate of A020654.A023737
Duplicate of A020654.
- Numbers with a single 4 in their base 5 expansion.A023738
Numbers with a single 4 in their base 5 expansion.
- Numbers with exactly 2 4's in base 5 expansion.A023739
Numbers with exactly 2 4's in base 5 expansion.
- Numbers with exactly 3 4's in base 5 expansion.A023740
Numbers with exactly 3 4's in base 5 expansion.
- Ternary expansion uses each positive digit just once.A023741
Ternary expansion uses each positive digit just once.
- Base 4 expansion uses each positive digit just once.A023742
Base 4 expansion uses each positive digit just once.
- Base 5 expansion uses each positive digit just once.A023743
Base 5 expansion uses each positive digit just once.
- Base 6 expansion uses each positive digit just once.A023744
Base 6 expansion uses each positive digit just once.
- Plaindromes: numbers whose digits in base 3 are in nondecreasing order.A023745
Plaindromes: numbers whose digits in base 3 are in nondecreasing order.
- Plaindromes: numbers whose digits in base 4 are in nondecreasing order.A023746
Plaindromes: numbers whose digits in base 4 are in nondecreasing order.
- Plaindromes: numbers whose digits in base 5 are in nondecreasing order.A023747
Plaindromes: numbers whose digits in base 5 are in nondecreasing order.
- Plaindromes: numbers whose digits in base 6 are in nondecreasing order.A023748
Plaindromes: numbers whose digits in base 6 are in nondecreasing order.
- Plaindromes: numbers whose digits in base 7 are in nondecreasing order.A023749
Plaindromes: numbers whose digits in base 7 are in nondecreasing order.
- Plaindromes: numbers whose digits in base 8 are in nondecreasing order.A023750
Plaindromes: numbers whose digits in base 8 are in nondecreasing order.
- Plaindromes: numbers whose digits in base 9 are in nondecreasing order.A023751
Plaindromes: numbers whose digits in base 9 are in nondecreasing order.
- Plaindromes: numbers whose digits in base 11 are in nondecreasing order.A023752
Plaindromes: numbers whose digits in base 11 are in nondecreasing order.
- Plaindromes: numbers whose digits in base 12 are in nondecreasing order.A023753
Plaindromes: numbers whose digits in base 12 are in nondecreasing order.
- Plaindromes: numbers whose digits in base 13 are in nondecreasing order.A023754
Plaindromes: numbers whose digits in base 13 are in nondecreasing order.
- Plaindromes: numbers whose digits in base 14 are in nondecreasing order.A023755
Plaindromes: numbers whose digits in base 14 are in nondecreasing order.
- Plaindromes: numbers whose digits in base 15 are in nondecreasing order.A023756
Plaindromes: numbers whose digits in base 15 are in nondecreasing order.
- Plaindromes: numbers whose digits in base 16 are in nondecreasing order.A023757
Plaindromes: numbers whose digits in base 16 are in nondecreasing order.
- Numbers of the form 2^i - 2^j with i >= j.A023758
Numbers of the form 2^i - 2^j with i >= j.
- Nialpdromes: digits in base 3 are in nonincreasing order.A023759
Nialpdromes: digits in base 3 are in nonincreasing order.
- Nialpdromes: digits in base 4 are in nonincreasing order.A023760
Nialpdromes: digits in base 4 are in nonincreasing order.