233331

Appears in sequences

• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 23.at n=20A031701
• Triangle read by rows: T(n,k) = (n+1,k)-th element of (M^10-M)/9, where M is the infinite lower Pascal's triangle matrix, 1<=k<=n.at n=23A096044
• a(n) = 529*n^2 + 2*n.at n=20A158367
• Number of nonequivalent ways to place 3 points on an n X n square grid so that no more than 2 points are on a vertical or horizontal straight line.at n=14A279447