22557

Appears in sequences

• Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 100.at n=35A031598
• Numbers n which are concatenations n=x//y such that x^2+y^3 is a multiple of n.at n=37A162464
• Number of n X 2 0..1 arrays with no element unequal to a strict majority of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.at n=10A280174
• Indices of records in A361321.at n=46A361326
• a(n) is the least k such that the concatenations of k^i, i=0..j, are prime for j from 1 to n.at n=2A376027