G.f. satisfies A(x) = 1 + x*cycle_index(G,A(x)) where G = cyclic group of order 2 generated by (1,2)(3,4)(5,6).

A036724

G.f. satisfies A(x) = 1 + x*cycle_index(G,A(x)) where G = cyclic group of order 2 generated by (1,2)(3,4)(5,6).

Terms

    a(0) =1a(1) =1a(2) =3a(3) =18a(4) =109a(5) =768a(6) =5652a(7) =43618a(8) =346353a(9) =2816526a(10) =23321925a(11) =196005552a(12) =1667527836a(13) =14333190427a(14) =124283998707

External references