77306428

Appears in sequences

• Expansion of f(x^3)/(1-x*f(x^3)), where f(x) is the g.f. of A001764, whose n-th term is binomial(3n,n)/(2n+1).at n=34A126042
• Sequence s_n arising in enumeration of arrays of directed blocks (see Quaintance reference for precise definition).at n=21A129873
• Expansion of g^2/(2 - g), where g = 1+x*g^3 is the g.f. of A001764.at n=11A391125