4767841
domain: N
Appears in sequences
- Odd octagonal numbers indexed by triangular numbers.at n=35A243201
- Composite numbers n such that gcd(phi(n), n-1) = lambda(n), where lambda(n) = A002322(n).at n=28A264012
- Carmichael numbers m such that A309132(m) < m.at n=12A309268
- Carmichael numbers k such that k-1 is a Novak-Carmichael number.at n=13A375322