152714

Appears in sequences

• a(n) = (n^4 + 16*n^3 + 65*n^2 + 26*n + 12)/12.at n=33A188480
• G.f. A(x) satisfies: A(x) = 1 + x*A(x)*(1 + 2*x*A(x))/(1 - x*A(x) - x^2*A(x)^2).at n=9A307411