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

A391058

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

Terms

    a(0) =1a(1) =1a(2) =4a(3) =14a(4) =63a(5) =306a(6) =1584a(7) =8539a(8) =47431a(9) =269514a(10) =1559123a(11) =9151177a(12) =54360098a(13) =326183744a(14) =1974146875a(15) =12037072559a(16) =73871051550a(17) =455934004646

External references