G.f. satisfies A(x) = 1 + x*A(x) + x^3*A(x)^5.

Terms

a(0) =1a(1) =1a(2) =1a(3) =2a(4) =7a(5) =22a(6) =62a(7) =182a(8) =583a(9) =1928a(10) =6358a(11) =21063a(12) =70888a(13) =241889a(14) =831634a(15) =2874584a(16) =9995579a(17) =34966279a(18) =122938956a(19) =434062141a(20) =1538378816a(21) =5471697241a(22) =19525345791a(23) =69880082323a(24) =250767909528a(25) =902123110483