188286357653
domain: N
Appears in sequences
- a(0)=1, a(n) = 3*a(n-1) + 2; a(n) = 2*3^n - 1.at n=23A048473
- Primes of the form 2*3^k - 1.at n=7A079363
- Smallest prime p such that 3^n divides p^2 - 1.at n=20A125609
- Smallest prime p such that 3^n divides p^2 - 1.at n=21A125609
- Smallest prime p such that 3^n divides p^2 - 1.at n=22A125609
- A048473 prefixed by two zeros.at n=25A154992
- 2*3^(n-1)-(-1)^n.at n=23A174132
- a(n) = 6*9^n-1.at n=11A198963
- a(n) is the least prime of the form 2^j*3^k - 1, j > 0, k > 0, j + k = n. a(n) = 0 if no such prime exists.at n=22A337437