200720

Appears in sequences

• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 56.at n=15A031734
• Numbers k that can be expressed as k = w+x = y*z with w*x = (y+z)^2 where w, x, y, and z are all positive integers.at n=33A057369
• a(n) = 256*n^2 + 16.at n=28A158574