53372

Appears in sequences

• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 42.at n=10A031720
• a(n) = 121*n^2 + 11.at n=21A158536
• Second entry in row n of triangle in A169940.at n=33A169943
• Number of circular binary sequences of length n with an odd number of 0's and no three consecutive 1's.at n=18A366045