44000
domain: N
Appears in sequences
- Triangle whose (i,j)-th entry is binomial(i,j)*10^(i-j)*11^j.at n=11A038313
- Triangle read by rows whose (i,j)-th entry is binomial(i,j)*11^(i-j)*10^j.at n=13A038324
- Numbers n such that A048767(n) = n.at n=35A048768
- Number of base 28 circular n-digit numbers with adjacent digits differing by 2 or less.at n=6A124956
- Numbers such that the digital sum base 2 and the digital sum base 5 and the digital sum base 10 all are equal.at n=28A135125
- Records in A160256.at n=33A151545
- a(n) = smallest number which has in its Spanish name the letter "m" in the n-th position,or -1 if no such number exists.at n=15A164813
- a(n) = smallest number which has in its Spanish name the letter "l" in the n-th position, or -1 if no such number exists.at n=17A164814
- Numbers whose decimal expansion contains only 0's and 4's.at n=24A169967
- Numbers with prime factorization pq^3r^5.at n=22A190011
- Numbers such that each digit is the sum of two or more other digits.at n=15A203591
- Composite numbers m such that Sum_{i=1..k} (p_i/(p_i+1)) - Product_{i=1..k} (p_i/(p_i-1)) is an integer, where p_i are the k prime factors of m (with multiplicity).at n=17A230111
- a(n) = n*(n + 1)*(19*n - 16)/6.at n=24A237618
- Records values in A072994.at n=61A251642
- Number x = concat(MSD(x),b) such that MSD(x)*b = phi(x), where MSD(x) is the Most Significant Digit of x and phi(x) is the Euler totient function of x.at n=30A286130
- Number of irredundant sets in the n-Fibonacci cube graph.at n=5A291963
- Numbers whose ordered prime signature is equal to the set of distinct prime indices in decreasing order.at n=24A324571
- G.f. = Phi^5, where Phi = g.f. for A028930.at n=23A328530
- Irregular triangle T(n,k), n >= 0, 0 <= k < 2^(n-1), where T(n,k) = Product_{j=0..n-1} prime(j+1)^((n-j)*d_j), where d_j is the bit with digit weight 2^j in the binary expansion of 2^(n-1)+k.at n=21A384003
- Irregular triangle T(n,k), n >= 0, 0 <= k < 2^(n-1), where T(n,k) = Product_{j=0..n-1} prime(n-j)^((j+1)*d_j), where d_j is the bit with digit weight 2^j in the binary expansion of 2^(n-1)+k.at n=21A387465