270420

Appears in sequences

• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 52.at n=19A031730
• a(n) = 400*n^2 + 20.at n=26A158601
• G.f. satisfies: A(x) = 1/A(-x*A(x)^8).at n=6A214768