Smallest k such that the numbers j*k - 1 and j*k + 1 are prime for 1 <= j <= n.
A348348
Smallest k such that the numbers j*k - 1 and j*k + 1 are prime for 1 <= j <= n.
Terms
- a(0) =4a(1) =6a(2) =6a(3) =21968100a(4) =100803789240
External references
- oeis: A348348