41028

Appears in sequences

• Numbers n such that n^2 is divisible by the sum of the distinct prime divisors of n^2 + 1.at n=23A196219
• Number of connected undirected unlabeled loopless multigraphs with 4 vertices and n edges.at n=38A290778
• a(n) = Sum_{k=0..n} binomial(n, k + 1)*k!*(n + 1)!/(k + 2)!.at n=6A355171
• Array read by ascending antidiagonals. A(n, k) = k! * [x^k] log((1 - x) / (1 - 2*x)) / (1 - x)^n, for 0 <= k <= n.at n=42A355257