48111

Appears in sequences

• a(n) = n*(n+1)*(n^2 + 21*n + 50)/24.at n=27A101854
• a(n) is the least nonnegative integer k such that (k^2 + prime(n)^2)/2 is prime but (k^2 + prime(i)^2)/2 is not prime for i < n.at n=45A358804
• Number of finite regions in a complete bipartite graph where the vertices in the two parts are placed on opposite sides of a parabola at integer x coordinates |x| = 1, 2, ...n.at n=21A392426