A154510 Primes of the form 648*n^2 + 72*n + 1.

10657, 16561, 23761, 32257, 65521, 79201, 287281, 374977, 474337, 510049, 624961, 665857, 708049, 988417, 1039681, 1092241, 1146097, 1315441, 1374481, 1755937, 1893457, 2036161, 2259937, 2913697, 3090097, 3553777, 4470049, 5255281

Offset

1,1

Links

Vincenzo Librandi and T. D. Noe, Table of n, a(n) for n = 1..1000

Example

For n=4, a(1)=10657; n=10, a(5)=65521.

Mathematica

lst={}; Do[p=648*n^2+72*n+1; If[PrimeQ[p], AppendTo[lst, p]], {n, 0, 5*5!}]; lst (* Vladimir Joseph Stephan Orlovsky, Jan 27 2009 *)
Select[Table[648n^2+72n+1, {n, 100}], PrimeQ] (* Harvey P. Dale, Jul 27 2011 *)

Prog

(Magma) [ a: n in [0..350] | IsPrime(a) where a is 648*n^2+72*n+1]

Crossrefs

Cf. A154511

Sequence in context: A317417 A317418 A138254 * A157326 A207261 A250524

Adjacent sequences: A154507 A154508 A154509 * A154511 A154512 A154513

Keyword

nonn

Author

Vincenzo Librandi, Jan 11 2009

Status

approved