G.f. A(x) satisfies A(x) = 1 + x^4*(1+x)^2*A(x)^3.

Terms

a(0) =1a(1) =0a(2) =0a(3) =0a(4) =1a(5) =2a(6) =1a(7) =0a(8) =3a(9) =12a(10) =18a(11) =12a(12) =15a(13) =72a(14) =180a(15) =240a(16) =235a(17) =512a(18) =1552a(19) =3080a(20) =4123a(21) =5810a(22) =13825a(23) =33200a(24) =58813a(25) =85932a(26) =151578a(27) =346920a(28) =726897a(29) =1242234