Expansion of g^2/(1 - x*g)^3, where g = 1+x*g^4 is the g.f. of A002293.
A391276
Expansion of g^2/(1 - x*g)^3, where g = 1+x*g^4 is the g.f. of A002293.
Terms
- a(0) =1a(1) =5a(2) =24a(3) =131a(4) =810a(5) =5481a(6) =39451a(7) =296513a(8) =2300088a(9) =18275180a(10) =147963612a(11) =1216292565a(12) =10123894013a(13) =85153920393a(14) =722651364915
External references
- oeis: A391276