272513

Appears in sequences

• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 36.at n=28A031714
• Number of 5-colorable (i.e., chromatic number <= 5) simple graphs on n nodes.at n=8A076317
• a(n) = 841*n^2 + 29.at n=18A158665