Expansion of g^5/(1 + x*g)^2, where g = 1+x*g^2 is the g.f. of A000108.

A391408

Expansion of g^5/(1 + x*g)^2, where g = 1+x*g^2 is the g.f. of A000108.

Terms

    a(0) =1a(1) =3a(2) =11a(3) =38a(4) =133a(5) =468a(6) =1660a(7) =5932a(8) =21346a(9) =77301a(10) =281545a(11) =1030778a(12) =3791597a(13) =14006456a(14) =51941576a(15) =193301120a(16) =721697246a(17) =2702472854a(18) =10147300982a(19) =38197179692a(20) =144119279906a(21) =544941540968

External references