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

A391406

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

Terms

    a(0) =1a(1) =3a(2) =14a(3) =68a(4) =352a(5) =1895a(6) =10509a(7) =59619a(8) =344380a(9) =2018599a(10) =11976479a(11) =71786394a(12) =434049233a(13) =2644251959a(14) =16214959902a(15) =100008206636a(16) =619980261922

External references