30639

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=6A031703
• a(n) = 625*n^2 + 2*n.at n=6A158382
• a(n) = minimal positive k such that the concatenation of the binary expansions of n,n+1,...,n+k is divisible by n+k+1, or -1 if no such k exists.at n=32A332563