63252

Appears in sequences

• Triangle T(n,k) = binomial(n+2,k+1)*(binomial(n+2,k+1)-1), n >=0, 0 <= k <= n.at n=40A065420
• a(n) = 81*n^2 - 9*n.at n=28A277991
• Maximum number of 6 sphinx tile shapes in a sphinx tiled hexagon of order n.at n=41A291582