Sequences

Binomial coefficients: C(n,k), 9 <= k <= n-9, sorted, duplicates removed.

Binomial coefficients: C(n,k), 10 <= k <= n-10, sorted, duplicates removed.

Every prefix prime in base 3 (written in base 3).

Every prefix prime in base 4 (written in base 4).

Every prefix prime in base 5 (written in base 5).

Every prefix prime in base 6 (written in base 6).

Every prefix prime in base 7 (written in base 7).

Prefix primes in base 8 (written in base 8).

Every prefix prime in base 9 (written in base 9).

Right-truncatable primes: every prefix is prime.

Expansion of 1/((1-x)(1-8x)(1-9x)(1-10x)).

Expansion of 1/((1-x)(1-8x)(1-9x)(1-11x)).

Every prefix and suffix prime in base 5 (written in base 5).

Every prefix and suffix prime in base 6 (written in base 6).

Every prefix and suffix prime in base 7 (written in base 7).

Every prefix and suffix prime in base 8 (written in base 8).

Every prefix and suffix prime in base 9 (written in base 9).

Expansion of 1/((1-x)(1-8x)(1-9x)(1-12x)).

Every suffix is prime and contains no 0 digits in base 4 (written in base 4).

Every suffix prime and no 0 digits in base 5 (written in base 5).

Every suffix prime and no 0 digits in base 6 (written in base 6).

Every suffix prime and no 0 digits in base 7 (written in base 7).

Every suffix prime and no 0 digits in base 8 (written in base 8).

Every suffix prime and no 0 digits in base 9 (written in base 9).

Left-truncatable primes: every suffix is prime and no digits are zero.

Number of 2's in all partitions of n.

Number of 3's in all partitions of n.

Number of 4's in all partitions of n.

Number of 5's in all partitions of n.

Number of 6's in all partitions of n.

Number of 7's in all partitions of n.

Number of 8's in all partitions of n.

Number of 9's in all partitions of n.

Number of 10's in all partitions of n.

Numbers that are the sum of 3 nonzero squares, including repetitions.

Numbers expressible in more than one way as i^2 + j^2 + k^2, where 1 <= i <= j <= k.

Positions of primes in A000408.

Positions of even numbers in A000408.

Positions of odd numbers in A000408.

a(n) = position of 3*(n^2) in A000408.

Position of n^2 + 5 in A000408.

a(n) = position of n^2 + (n+1)^2 + (n+2)^2 in A000408.

Numbers that are the sum of 3 distinct nonzero squares, including repetitions.

Numbers that are the sum of 3 distinct nonzero squares in 2 or more ways.

Positions of primes in A004432.

Positions of even numbers in A004432.

Positions of odd numbers in A004432.

a(n) = position of 5 + n^2 in A004432.

a(n) = position of n^2 + (n+1)^2 + (n+2)^2 in A004432.

a(n) = floor( tan(m*Pi/2) ), where m = 1 - 2^(-n).