A157417 Primes of the form floor((4*n^2-8*n-9)/3).

7, 17, 29, 43, 61, 103, 157, 257, 337, 641, 701, 829, 967, 1117, 1277, 1361, 1447, 1723, 2129, 2237, 2347, 3067, 3329, 3463, 4177, 4327, 4481, 4637, 4957, 5981, 6343, 6529, 6907, 7297, 7901, 8317, 9181, 9403, 9629, 9857, 10321, 11527, 11777, 12541, 13063

Offset

1,1

Comments

Added in order to clarify A154616.

Links

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

Mathematica

Select[Table[Floor[(4 n^2 - 8 n - 9)/3], {n, 3, 100}], PrimeQ] (* Vincenzo Librandi, Mar 21 2013 *)

Prog

(Magma) [a: n in [3..100] | IsPrime(a) where a is Floor((4*n^2-8*n-9)/3)]; // Vincenzo Librandi, Mar 21 2013

Crossrefs

Sequence in context: A029532 A217926 A250294 * A356293 A294133 A088566

Adjacent sequences: A157414 A157415 A157416 * A157418 A157419 A157420

Keyword

nonn,easy

Author

N. J. A. Sloane, Jun 25 2010

Status

approved