149281
domain: N
Appears in sequences
- Composite numbers k such that k == +-1 (mod 8) and 2^((k-1)/2) == 1 (mod k).at n=36A006971
- a(n) = n*(13*n^2 - 7)/6.at n=41A062025
- Increasing gaps between 2-pseudoprimes (upper end).at n=14A175737
- Composite integers k satisfying 2^d == 2^(k/d) (mod k) for all d|k and that are not Super-Poulet (A050217).at n=4A291602