110520

Appears in sequences

• Solutions y of the Mordell equation y^2 = x^3 - 3a^2 + 1 for a = 0,1,2, ... (solutions x are given by the sequence A000466).at n=24A173202
• G.f. A(x) satisfies: 1 = Sum_{n>=0} binomial((n+1)*(n+2), n) / ((n+1)*(n+2)/2) * x^n / A(x)^((n+1)*(n+2)/2).at n=6A299424