G.f. A(x) satisfies A(x) = C(x) / (1 - x*A(x)^3), where C(x) is the g.f. of A000108.

A381827

G.f. A(x) satisfies A(x) = C(x) / (1 - x*A(x)^3), where C(x) is the g.f. of A000108.

Terms

    a(0) =1a(1) =2a(2) =10a(3) =69a(4) =562a(5) =5042a(6) =48100a(7) =478547a(8) =4908338a(9) =51522174a(10) =550758208a(11) =5974753990a(12) =65608248500a(13) =727835313461

External references