129636

Appears in sequences

• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 20.at n=36A031698
• a(n) = concatenation of n^2 and n.at n=35A055436
• a(n) = 400*n^2 + 2*n.at n=17A158312
• a(n) = 1296*n^2 + 36.at n=10A158739