75647

Appears in sequences

• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 25.at n=10A031703
• a(n) = T(n)^2 - n^2, where T(n) is a triangular number.at n=23A085740
• a(n) = 625*n^2 + 2*n.at n=10A158382