Expansion of g^4/(1 + x*g)^2, where g = 1+x*g^3 is the g.f. of A001764.

A391407

Expansion of g^4/(1 + x*g)^2, where g = 1+x*g^3 is the g.f. of A001764.

Terms

    a(0) =1a(1) =2a(2) =11a(3) =52a(4) =271a(5) =1460a(6) =8107a(7) =46036a(8) =266134a(9) =1561012a(10) =9266929a(11) =55573104a(12) =336162522a(13) =2048697862a(14) =12567146031a(15) =77532920596a(16) =480777987559

External references