401625

Appears in sequences

• Number of multilinear monomials corresponding to the association types of A190915.at n=6A190916
• Number of pairs of endofunctions f, g on [n] satisfying f(g^10(i)) = f(i) for all i in [n].at n=5A245919
• Numbers k such that sigma(k) is either their sibling in Doudna tree (A005940), or one of the sibling's descendants.at n=11A347391
• Numbers k such that the odd parts of sigma(k) and A064989(k) are equal, where A064989 shifts the prime factorization one step towards lower primes, and sigma is the sum of divisors function.at n=12A374463
• Odd numbers k such that k/(1+A347381(k)) obtains record values, where A347381 gives the distance from n to the nearest common ancestor of n and sigma(n) in the Doudna-tree.at n=37A386423