129624

Appears in sequences

• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 30.at n=23A031708
• a(n) = 225*n^2 + n.at n=23A156814
• a(n) = 900*n^2 + 2*n.at n=11A158406
• a(n) = 576*n^2 + 24.at n=15A158637
• Index in A092243 where -n first appears.at n=37A269738
• Irregular table read by rows: Take an octagon with all diagonals drawn, as in A333075. Then T(n,k) = number of k-sided polygons in that figure for k >= 3.at n=31A333076
• Expansion of Product_{k>=1} (1-x^k/Product_{j=1..k} (1-x^j)).at n=28A350587
• Numbers k such that k divides the sum of the digits of k^(3k).at n=27A383746