25616

Appears in sequences

• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 20.at n=15A031698
• a(n) = concatenation of n^2 and n.at n=15A055436
• a(n) = 100*n^2 + n.at n=15A055438
• Numbers k such that phi(k) + k is a fourth power.at n=19A114072
• Numbers of polypentagons with one internal vertex (see Cyvin et al. for precise definition).at n=13A122745
• a(n) = 64*n^2 + 16.at n=19A157912
• a(n) = 400*n^2 + 2*n.at n=7A158312
• a(n) = 256*n^2 + 16.at n=10A158574
• Numbers n such that 5^n - 8 is prime.at n=11A217134
• Number of partitions of n+8 with largest inscribed rectangle having area <= n.at n=30A218629
• Positions of zeros in A345055, which is the Dirichlet inverse of A011772.at n=47A345053