O.g.f. satisfies A^6(z) = 1/(1 - z)*( BINOMIAL(BINOMIAL(A(z))) )^5.

A258381

O.g.f. satisfies A^6(z) = 1/(1 - z)*( BINOMIAL(BINOMIAL(A(z))) )^5.

Terms

    a(0) =1a(1) =11a(2) =181a(3) =4191a(4) =131241a(5) =5360883a(6) =275510493a(7) =17223156423

External references