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 A108028 Numbers k such that 139*k + 137 is prime. 3
 0, 6, 8, 14, 20, 38, 54, 66, 78, 80, 84, 90, 98, 104, 108, 110, 128, 138, 140, 146, 156, 170, 194, 204, 206, 210, 216, 236, 258, 260, 264, 276, 288, 296, 314, 320, 338, 350, 360, 380, 386, 390, 426, 428, 440, 446, 450, 456, 458, 464, 476 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS 137 and 139 are twin primes. LINKS Daniel Starodubtsev, Table of n, a(n) for n = 1..10000 Chris Caldwell, The First 1,008 Twin Primes. EXAMPLE If k=84 then 139*k+ 137 = 11813 (prime). MATHEMATICA Select[Range[0, 500], PrimeQ[139*# + 137] &] (* Stefan Steinerberger, Mar 03 2006 *) PROG (PARI) is(n)=isprime(139*n+137) \\ Charles R Greathouse IV, Jun 06 2017 CROSSREFS Sequence in context: A315914 A315915 A315916 * A160244 A315917 A315918 Adjacent sequences: A108025 A108026 A108027 * A108029 A108030 A108031 KEYWORD nonn,easy AUTHOR Parthasarathy Nambi, May 31 2005 EXTENSIONS More terms from Stefan Steinerberger, Mar 03 2006 STATUS approved

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Last modified December 6 08:36 EST 2022. Contains 358605 sequences. (Running on oeis4.)