211640

Appears in sequences

• a(n) = 11*a(n-1) + 9*a(n-2).at n=6A015603
• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 23.at n=19A031701
• Partial sums of A064059.at n=11A115132
• a(n) = 529*n^2 + 2*n.at n=19A158367