Expansion of 1/((1-xc(x)-x^2c(x)^2)(1-x^2c(x))) with c(x) the g.f. of A000108.

A109268

Expansion of 1/((1-xc(x)-x^2c(x)^2)(1-x^2c(x))) with c(x) the g.f. of A000108.

Terms

    a(0) =1a(1) =1a(2) =4a(3) =11a(4) =36a(5) =119a(6) =407a(7) =1418a(8) =5018a(9) =17971a(10) =64989a(11) =236915a(12) =869518a(13) =3209735a(14) =11907644a(15) =44368636a(16) =165957615a(17) =622880402a(18) =2345005449a(19) =8852862717a(20) =33505203060a(21) =127096279124a(22) =483127286394

External references