18463
domain: N
Appears in sequences
- Discriminants of quintic fields with 2 complex conjugates (negated).at n=30A023684
- Denominators of continued fraction convergents to sqrt(128).at n=6A041233
- Denominators of continued fraction convergents to sqrt(512).at n=10A041979
- Semiprimes whose digit reversal is a nontrivial power.at n=38A108849
- Semiprimes (A001358) whose digit reversal is a square.at n=33A115710
- Ulam's spiral (NNW spoke).at n=34A143860
- Least sum of a set of n evil numbers (A001969) such that any two or more add to an odious number (A000069).at n=6A230386
- a(n) = 2*A090495(n) - 1.at n=33A274297