A123982 Numbers k such that 12*k+1, 12*k+5 and 12*k+11 are primes.

1, 3, 8, 19, 29, 38, 56, 71, 73, 78, 84, 91, 101, 108, 119, 124, 129, 133, 134, 166, 199, 203, 224, 236, 246, 288, 294, 301, 316, 344, 376, 399, 411, 423, 488, 623, 628, 631, 656, 686, 724, 728, 819, 861, 871, 883, 894, 1008, 1009, 1053, 1074, 1086, 1156, 1179

Offset

1,2

Links

Amiram Eldar, Table of n, a(n) for n = 1..10000

Maple

a:=proc(n) if isprime(12*n+1)=true and isprime(12*n+5)=true and isprime(12*n+11)=true then n else fi end: seq(a(n), n=1..1400); # Emeric Deutsch, Nov 06 2006

Mathematica

Select[Range[1200], And @@ PrimeQ /@ ({1, 5, 11} + 12#) &] (* Ray Chandler, Nov 05 2006 *)

Crossrefs

Cf. A110801.

Sequence in context: A124086 A091109 A219391 * A171308 A113535 A184444

Adjacent sequences: A123979 A123980 A123981 * A123983 A123984 A123985

Keyword

nonn

Author

Artur Jasinski, Oct 30 2006

Extensions

Extended by Ray Chandler, Nov 05 2006

More terms from Emeric Deutsch, Nov 06 2006

Status

approved