G.f. satisfies A(x) = 1 + x*A(x) + x^6*A(x)^6.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =2a(7) =8a(8) =29a(9) =85a(10) =211a(11) =463a(12) =931a(13) =1795a(14) =3550a(15) =7736a(16) =18929a(17) =49505a(18) =130000a(19) =330430a(20) =804271a(21) =1885675a(22) =4327555a(23) =9929515a(24) =23224435a(25) =55907251a(26) =138016906a(27) =345107296a(28) =862546231a(29) =2136402451