A091272 Primes of the form n^2 - 11.

5, 53, 89, 313, 389, 773, 1013, 1433, 1753, 2293, 2693, 3833, 4889, 6073, 6389, 8089, 13913, 14389, 16889, 21893, 24953, 25589, 29573, 33113, 39989, 44089, 47513, 51973, 52889, 53813, 56633, 61493, 63493, 66553, 67589, 68633, 72889, 73973

Offset: 1

Author

Ray Chandler, Dec 27 2003

Keywords

• nonn
• easy

Links

• Vincenzo Librandi, Table of n, a(n) for n = 1..5000

Crossrefs

Primes arising in A090696 and A091271, A091273 gives prime index.

Programs

Magma

[a: n in [4..600] | IsPrime(a) where a is n^2-11]; // Vincenzo Librandi, Dec 01 2011

Mathematica

lst={};Do[s=n^2;If[PrimeQ[p=s-11], AppendTo[lst, p]], {n, 7!}];lst (* Vladimir Joseph Stephan Orlovsky, Sep 27 2008 *)
Select[Range[4,1000]^2-11,PrimeQ] (* Vincenzo Librandi, Dec 01 2011 *)