77286

Appears in sequences

• G.f.: Sum_{n>=0} (n+1)*(n+2)/2 * x^n * (1 + x^n)^n.at n=65A326003
• Expansion of 1/(g * (2 - g^2)), where g = 1+x*g^3 is the g.f. of A001764.at n=7A391517