A123985 Numbers n for which 12n+1, 12n+5, 12n+7 and 12n+11 are primes.

1, 3, 8, 38, 71, 73, 108, 166, 288, 376, 656, 871, 1156, 1338, 1618, 1751, 1776, 1856, 1921, 1963, 2311, 2418, 2801, 3501, 3538, 3648, 3818, 4266, 4541, 4611, 4651, 5076, 6723, 6751, 7388, 7533, 7621, 7698, 7738, 7796, 8083, 8193, 9073, 9243, 9418, 9516

Offset: 1

Author

Artur Jasinski, Oct 30 2006

Keywords

• nonn

Links

• T. D. Noe, Table of n, a(n) for n=1..1000

Crossrefs

Cf. A110801.

Programs

Mathematica

Select[Range[10^4], And @@ PrimeQ /@ ({1, 5, 7, 11} + 12#) &] (* Ray Chandler, Nov 22 2006 *)

PARI

P=isprime;
for(n=0, 10^5, if(P(12*n+1) && P(12*n+5) && P(12*n+7) && P(12*n+11), print1(n", ")));
\\ Joerg Arndt, Jul 11 2014