0,3

G.f.: A(x) = 1 + x*B(x)^6 where B(x) is the g.f. of A137971.

(PARI) {a(n)=local(A=1+x*O(x^n)); for(i=0, n, A=1+x*(1+x*A^4)^6); polcoeff(A, n)}

Cf. A137971, A137973; A137968, A137970, A137974.

Sequence in context: A009018 A135890 A067273 this_sequence A007322 A058191 A113347

Adjacent sequences: A137969 A137970 A137971 this_sequence A137973 A137974 A137975

nonn

Paul D. Hanna (pauldhanna(AT)juno.com), Feb 26 2008