216256

Appears in sequences

• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 30.at n=30A031708
• a(n) = 225*n^2 + n.at n=30A156814
• a(n) = 961*n^2 + 31.at n=15A158675
• a(n) = binomial(n, 2) + 6*binomial(n, 4).at n=32A327319