122528

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=13A031703
• a(n) = a(1) + a(2) + ... + a(n-1) - a(m), where m = 2^(p+1) + 2 - n and p is the unique integer such that 2^p < n - 1 <= 2^(p+1), starting with a(1) = a(2) = 1 and a(3) = 2.at n=19A049889
• a(n) = 625*n^2 + 2*n.at n=13A158382
• Number of 3-turn bishop's tours on an n X n board summed over all starting positions.at n=16A188778