A154414 Primes of the form 20n^2+32n+13.

13, 157, 461, 673, 1217, 1549, 2333, 4993, 6337, 7069, 7841, 11329, 12301, 13313, 17761, 18973, 21517, 25633, 30109, 36637, 41953, 45697, 47629, 51613, 62273, 69149, 78877, 81409, 97441, 105997, 108929, 114913, 137117, 140449, 143821

Offset

1,1

Links

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

Mathematica

Select[Table[20n^2+32n+13, {n, 0, 6001}], PrimeQ] (* Vincenzo Librandi, Jul 23 2012 *)

Prog

(Magma) [a: n in [0..100] | IsPrime(a) where a is 20*n^2+32*n+13]; // Vincenzo Librandi, Jul 23 2012
(PARI) {for(n=0, 100, if(isprime(k=20*n^2+32*n+13), print1(k, ", ")))}; Vincenzo Librandi, Jul 23 2012

Crossrefs

Cf. A017365.

Sequence in context: A142104 A140020 A130868 * A164623 A072841 A360192

Adjacent sequences: A154411 A154412 A154413 * A154415 A154416 A154417

Keyword

nonn,easy

Author

Vincenzo Librandi, Jan 09 2009

Status

approved