G.f. A(x) satisfies: 1 - x = Sum_{n>=0} (x^(5*n) + (-1)^n*A(x))^n.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =3a(6) =4a(7) =5a(8) =6a(9) =8a(10) =13a(11) =21a(12) =32a(13) =46a(14) =66a(15) =99a(16) =155a(17) =244a(18) =376a(19) =569a(20) =862a(21) =1328a(22) =2077a(23) =3256a(24) =5071a(25) =7853a(26) =12181a(27) =19023a(28) =29882a(29) =47004