A154253 Primes of the form 9n^2-8n+2.

2, 3, 59, 659, 1907, 2467, 3803, 9539, 19507, 23003, 24859, 30859, 37507, 42299, 52747, 58403, 61339, 67427, 98387, 122267, 126499, 139627, 162947, 182899, 209459, 214987, 232003, 243707, 280547, 347707, 362003, 383987, 429899, 478403

Offset: 1

Author

Vincenzo Librandi, Jan 05 2009

Keywords

• nonn
• easy

Comments

Primes in A154254.

Primes generated by n = 1, 3, 9, 15, 17, 21, 33, 47, 51, 53, 59,...

(All but the first of these are either 3 (mod 6) or 5 (mod 6), as in A047270, because otherwise 9n^2-8n+2 is a multiple of 2 or 3. R. J. Mathar, Jul 17 2012).

Links

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

Programs

Magma

[a: n in [0..250] | IsPrime(a) where a is 9*n^2-8*n+2]; // Vincenzo Librandi, Jul 16 2012

Mathematica

Select[Table[9n^2-8n+2,{n,0,1500}],PrimeQ] (* Vincenzo Librandi, Jul 16 2012 *)