33554426
domain: N
Appears in sequences
- Numbers k such that phi(k + 6) | sigma(k) + 6.at n=15A015872
- Binomial transform of [1,1,7,1,7,1,7,1,...].at n=23A131130
- Numbers m for which sigma(m) - m = tau(m)^k for some integer k > 0.at n=15A219668
- Numbers such that none of their prime factors share common 1-bits in the same bit-position and when added (or "ored" or "xored") together, yield a term of A000225 (a binary "repunit").at n=18A235490
- 2^n minus the sum of the proper divisors of n.at n=24A242389
- a(n) = 2*a(n-1) + a(n-2) - 2*a(n-3) for n>2, a(0)=-1, a(1)=-2, a(2)=-4.at n=26A254076
- Decimal representation of the n-th iteration of the "Rule 227" elementary cellular automaton starting with a single ON (black) cell.at n=12A267847
- Composite numbers whose sum of proper divisors is a power of 2.at n=35A279731
- Binary self numbers (A010061) with a record gap to the next binary self number.at n=6A339239
- Nonprime numbers whose sum of proper divisors is a power of 4.at n=25A383872