A108874 - OEIS

A108874

Numbers k such that 41*k + 43 is prime.

0, 14, 20, 26, 38, 44, 48, 56, 60, 66, 80, 90, 116, 126, 138, 140, 146, 158, 170, 174, 186, 198, 200, 224, 228, 230, 236, 240, 248, 254, 264, 266, 270, 290, 294, 300, 306, 308, 314, 320, 324, 338, 354, 356, 368, 374, 378, 384, 390, 398, 404, 416, 426, 434, 446

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

LINKS

Harvey P. Dale, Table of n, a(n) for n = 1..1000

EXAMPLE

If k=0 then 41*k + 43 = 43 (prime).

If k=90 then 41*k + 43 = 3733 (prime).

MATHEMATICA

Select[Range[0, 500], PrimeQ[41#+43]&] (* Harvey P. Dale, May 09 2012 *)

PROG

(Magma) [n: n in [0..500] | IsPrime(41*n+43)]; - Vincenzo Librandi, Nov 13 2010