A108857 Numbers n such that 10*n + 131 is prime.

0, 2, 5, 6, 8, 11, 12, 14, 15, 18, 20, 27, 29, 30, 33, 36, 39, 41, 44, 47, 50, 51, 53, 56, 57, 62, 63, 68, 69, 75, 78, 81, 84, 86, 89, 90, 92, 93, 96, 102, 104, 105, 107, 110, 116, 117, 119, 123, 125, 132, 134, 135, 138, 140, 144, 147, 149, 159, 161, 167, 168, 170, 173

Offset

1,2

Links

Matthew House, Table of n, a(n) for n = 1..10000

Formula

a(n) = A024912(n+6) - 13. - Robert Israel, Aug 09 2015

Example

If n=0 then 10*n + 131 = 131 (prime).
If n=33 then 10*n + 131 = 461 (prime).

Maple

select(n -> isprime(10*n+131), [$0..1000]); # Robert Israel, Aug 09 2015

Mathematica

Select[Range[0, 200], PrimeQ[10#+131]&] (* Harvey P. Dale, Aug 13 2023 *)

Prog

(Magma) [n: n in [0..200] | IsPrime(10*n+131)]; // Vincenzo Librandi, Nov 13 2010
(PARI) is(n)=isprime(10*n+131) \\ Charles R Greathouse IV, Jun 12 2017

Crossrefs

Cf. A024912.

Sequence in context: A104493 A139532 A024798 * A132142 A045751 A047267

Adjacent sequences: A108854 A108855 A108856 * A108858 A108859 A108860

Keyword

nonn,easy

Author

Parthasarathy Nambi, Jul 11 2005

Status

approved