1316397

Appears in sequences

• G.f.: (21 + 101*x + 97*x^2 + 22*x^3 + x^4)/(1 - x)^5.at n=18A160769
• G.f. satisfies A(x) = (1 + x*A(x))^2 * (1 + x^3*A(x)).at n=12A218251