G.f. A(x) = (1+x)*G(x) = G(G(x)) where G(x) = g.f. of A067145.

A107094

G.f. A(x) = (1+x)*G(x) = G(G(x)) where G(x) = g.f. of A067145.

Terms

    a(0) =0a(1) =1a(2) =2a(3) =0a(4) =2a(5) =-10a(6) =56a(7) =-350a(8) =2390a(9) =-17544a(10) =136846a(11) =-1124794a(12) =9681832a(13) =-86864206a(14) =809349770a(15) =-7808871616a(16) =77836952362a(17) =-800020218314

External references