G.f. satisfies A(x) = 1 + x^5*A(x)^2 / (1 - x*A(x)).

Terms

a(0) =1a(1) =0a(2) =0a(3) =0a(4) =0a(5) =1a(6) =1a(7) =1a(8) =1a(9) =1a(10) =3a(11) =6a(12) =10a(13) =15a(14) =21a(15) =33a(16) =57a(17) =101a(18) =175a(19) =291a(20) =477a(21) =791a(22) =1341a(23) =2310a(24) =3986a(25) =6839a(26) =11681a(27) =19966a(28) =34300a(29) =59245