56640
domain: N
Appears in sequences
- Number of connected graphs with n nodes and n edges.at n=5A001866
- a(n) = (25*n^4-120*n^3+209*n^2-108*n)/6.at n=12A006529
- 1/n * sum over d|n of {mu(n/d) * (5d)! / d!^5}.at n=1A074653
- Structured great rhombicosidodecahedral numbers.at n=11A100145
- Solution of the complementary equation a(n) = a(n-1) + a(n-2) + 2*b(n-1) + 2*b(n-2), where a(0) = 1, a(1) = 3, b(0) = 2, b(1) = 4.at n=17A294419
- G.f. satisfies A(x) = 1 + x*A(x)^5 / (1 + x*A(x)^6).at n=8A365226