223652

Appears in sequences

• a(n) = C(n)*(5*n+1) where C(n) = Catalan numbers (A000108).at n=9A051945
• Tenth column (m=9) of (1,4)-Pascal triangle A095666.at n=10A095819
• G.f. A(x,y) satisfies: x*y*A(x,y) = Sum_{n=-oo..+oo} (-1)^n * x^(n*(n+1)/2) * A(x,y)^n, with coefficients T(n,k) of x^n*y^k in A(x,y) given as a triangle read by rows.at n=58A355360