A156018 Primes of the form k^3 + k^2 + k - 1.

2, 13, 83, 257, 1109, 2953, 6173, 8419, 14423, 40493, 99497, 127549, 178807, 198533, 347969, 378503, 480713, 599843, 787243, 1271483, 1417583, 1574467, 2883593, 3133597, 3397649, 4770023, 5118203, 5482927, 5671613, 6469637, 6680203

Offset

1,1

Links

Amiram Eldar, Table of n, a(n) for n = 1..10000

Example

13 is a term since 13 = 2^3 + 2^2 + 2 - 1.

Mathematica

lst={}; Do[p=(n^1+n^2+n^3)-1; If[PrimeQ[p], AppendTo[lst, p]], {n, 7!}]; lst

Crossrefs

Cf. A125964.

Sequence in context: A162772 A317892 A079752 * A285795 A134148 A164035

Adjacent sequences: A156015 A156016 A156017 * A156019 A156020 A156021

Keyword

nonn

Author

Vladimir Joseph Stephan Orlovsky, Feb 01 2009

Status

approved