52522

Appears in sequences

• Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 50.at n=4A031638
• Row sums of triangle A137639.at n=40A137640
• Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 502", based on the 5-celled von Neumann neighborhood.at n=31A288766
• Number of 8-element subsets of [n] whose sum is a triangular number.at n=16A320854