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A154414 Primes of the form 20n^2+32n+13. 2
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 (list; graph; refs; listen; history; text; internal format)
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 A244206

Adjacent sequences:  A154411 A154412 A154413 * A154415 A154416 A154417

KEYWORD

nonn,easy

AUTHOR

Vincenzo Librandi, Jan 09 2009

STATUS

approved

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Last modified April 3 00:35 EDT 2020. Contains 333195 sequences. (Running on oeis4.)