118301
domain: N
Appears in sequences
- Strong pseudoprimes to base 10.at n=17A020236
- Strong pseudoprimes to base 45.at n=22A020271
- Strong pseudoprimes to base 56.at n=20A020282
- Strong pseudoprimes to base 62.at n=38A020288
- Strong pseudoprimes to base 69.at n=37A020295
- Pentagonal numbers (A000326) that are also brilliant numbers (A078972).at n=16A113941
- Triangle read by rows: T(n,k) is the number of Dyck paths with no UUU's and no DDD's, of semilength n and having k UUDUDD's starting at level 0 (0 <= k <= floor(n/3); U=(1,1), D=(1,-1)).at n=51A166295
- Number of Dyck paths of semilength n with no UUU's and no DDD's and having no UUDUDD's starting at level 0 (U=(1,1), D=(1,-1)).at n=16A166296
- Semiprimes of the form n*(3*n-1)/2.at n=30A245365
- Semiprimes of the form (4*n + 1)*(6*n + 1) = 24*n^2 + 10*n + 1.at n=11A255584
- Number of ordered ways of writing n as a sum of n tetrahedral numbers.at n=14A303170