43908480
domain: N
Appears in sequences
- a(n) = n! + (n-1)! + (n-2)!.at n=11A054119
- Lah numbers: a(n) = n!*binomial(n-1,6)/7!.at n=5A111597
- E.g.f. satisfies: A(x) = A( x/(1-x)^2 ) * (1-x)/(1+x) with A(0)=0.at n=11A179320
- Number of labeled octopi with n nodes such that each tentacle has an odd number of nodes.at n=10A226968
- Number of endofunctions on [n] where the largest cycle length equals 10.at n=1A246220
- Table read by rows. T(n, k) = n*((k + n)!)^2/((k + n)*(n!)^2*k!) for n > 0 and T(0, 0) = 1.at n=33A355005