373320

Appears in sequences

• a(n) = 4*n^4 + 24*n^3 + 48*n^2 + 36*n + 8.at n=16A086302
• Triangle, read by rows, T(n, k) = 2*binomial(n, k)*binomial(n+1, k)/(k+1) - (k! - n! + (n-k)!).at n=49A176152
• Triangle, read by rows, T(n, k) = 2*binomial(n, k)*binomial(n+1, k)/(k+1) - (k! - n! + (n-k)!).at n=50A176152
• Number of undirected labeled graphs on n+3 nodes with exactly n cycle graphs as connected components.at n=15A215773
• G.f. A(x) satisfies A(x) = 1 + x + x*A(x)^(5/2).at n=9A366452