Expansion of g.f. A(x) satisfying A(x) = A( x^2*(1+x)^2 ) / (x*(1+x)).

Terms

a(0) =1a(1) =1a(2) =1a(3) =3a(4) =4a(5) =6a(6) =13a(7) =31a(8) =72a(9) =142a(10) =255a(11) =465a(12) =868a(13) =1666a(14) =3361a(15) =7099a(16) =15430a(17) =34044a(18) =75547a(19) =167389a(20) =367849a(21) =797275a(22) =1698682a(23) =3557446a(24) =7341014a(25) =14981954a(26) =30363966a(27) =61351570a(28) =123962309a(29) =250941549