1625000

Appears in sequences

• Numbers that are the sum of 2 nonzero squares in exactly 7 ways.at n=27A025290
• Triangle read by rows: T(n,k)=(-1)^k*(2n/(2n-k))5^(n-k)*binomial(2n-k,k) (0<=k<=n, n>=1).at n=37A104064
• Hypotenuses for which there exist exactly 19 distinct integer triangles.at n=24A290505