782880

Appears in sequences

• Doubles (index 2+) under "DGJ" (bracelet, element, labeled) transform.at n=6A032227
• E.g.f.: Limit_{N->oo} [ Sum_{n>=0} (N + n*y)^(2*n) * (x/N)^n/n! ]^(1/N).at n=58A266488
• Irregular triangle read by rows: T(n,k) = number of homeomorphically irreducible connected labeled graphs with n vertices and k edges, n >= 1, 0 <= k <= n*(n-1)/2.at n=74A331438
• G.f. A(x) satisfies A(x) = 1 + x + x^4*A(x)^4.at n=23A366558