A119409 Numbers k such that 235*k + 1 is prime.

4, 10, 16, 18, 22, 24, 28, 36, 42, 66, 70, 72, 88, 94, 102, 112, 120, 126, 148, 150, 154, 186, 190, 192, 196, 214, 232, 238, 240, 252, 256, 258, 268, 282, 286, 300, 318, 328, 330, 340, 352, 358, 366, 370, 372, 408, 412, 430, 436, 438, 450, 462, 472, 478, 490

Offset

1,1

Links

Table of n, a(n) for n=1..55.

Example

If k=94 then 235*k + 1 = 22091 (prime).

Mathematica

Select[Range[500], PrimeQ[235*# + 1] &] (* Stefan Steinerberger, Jul 26 2006 *)

Prog

(Magma) [ n: n in [0..500] | IsPrime(235*n + 1) ]; // Vincenzo Librandi, Jan 31 2011
(PARI) is(n)=isprime(235*n+1) \\ Charles R Greathouse IV, Jun 13 2017

Crossrefs

Cf. A120345, A120344.

Sequence in context: A310473 A310474 A310475 * A310476 A310477 A109603

Adjacent sequences: A119406 A119407 A119408 * A119410 A119411 A119412

Keyword

nonn,less,easy

Author

Parthasarathy Nambi, Jul 26 2006

Extensions

More terms from Stefan Steinerberger, Jul 26 2006

Status

approved