652848

Appears in sequences

• Theta series of D*_21 lattice.at n=20A022074
• Least k such that n! + k^2 is a square.at n=17A038202
• a(n) = (4/15)*n*(n - 1)*(n^3 - 9*n^2 + 26*n - 9).at n=21A319576