23782
domain: N
Appears in sequences
- Sum of 12 positive 9th powers.at n=21A004801
- Numbers k such that k^2 divides 21^k-1.at n=37A128401
- a(n) = n*(2*n^2 + 5*n + 3).at n=22A163815
- Composite squarefree numbers n such that p(i)-8 divides n+8, where p(i) are the prime factors of n.at n=16A225708
- Number of partitions p of n such that 3*min(p) is a part of p.at n=40A238590
- Numbers n such that the decimal expansions of both n and n^2 have 2 as smallest digit and 8 as largest digit.at n=34A257368
- Numbers k such that 3*10^k + 13 is prime.at n=19A290473
- Number of integer-sided pentagons having perimeter n, modulo rotations but not reflections.at n=42A293822
- Number of permutations of [n] avoiding {1324, 1342, 3421}.at n=10A294807
- a(n) = Sum_{k=0..n} binomial(3*k, k) * p(k), where p(k) is the partition function A000041.at n=5A356286