30683
domain: N
Appears in sequences
- Number of isolated-pentagon (IPR) fullerenes with 2n vertices (or carbon atoms).at n=34A046880
- Triangle read by rows: T(n,k) = numerator of P(n, k) = 1 - n!/(n^k*(n-k)!).at n=42A089204
- A054525 * A000041.at n=39A133732
- a(n) = 58*n^2 + 1.at n=23A158666
- Number of nonempty subsets of {1, 2, ..., n} with <=9 pairwise coprime elements.at n=28A187270
- Odd numbers n containing 65536 as the highest power of 2 in their Collatz (3x+1) iteration.at n=7A247716