A200846 Primes of the form 3n^3-1.

2, 23, 191, 647, 2999, 8231, 52727, 117911, 139967, 191999, 255551, 472391, 786431, 862487, 1028999, 1778111, 1908167, 2336063, 2999999, 3183623, 4682687, 5447543, 7218311, 9336407, 10124999, 10535423, 11389247, 12287999, 15265343

Offset

1,1

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

Mathematica

Select[Table[3n^3-1, {n, 1, 2000}], PrimeQ]

Prog

(Magma) [a: n in [1..300] | IsPrime(a) where a is 3*n^3-1]

Crossrefs

Sequence in context: A189977 A130547 A352355 * A198851 A173341 A118756

Adjacent sequences: A200843 A200844 A200845 * A200847 A200848 A200849

Keyword

nonn,easy

Author

Vincenzo Librandi, Nov 24 2011

Status

approved