A123990 Numbers k for which 16*k+1, 16*k+3, 16*k+7, 16*k+13 and 16*k+15 are primes.

1, 7771, 18166, 21691, 26146, 26356, 46801, 69046, 75916, 91516, 111406, 122716, 156196, 171436, 175726, 177316, 201571, 219316, 222706, 259951, 282826, 355531, 426796, 433621, 435301, 438976, 440056, 524371, 560461, 585166, 605506, 608026

Offset

1,2

Links

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

Mathematica

Select[Range[10^6], And @@ PrimeQ /@ ({1, 3, 7, 13, 15} + 16#) &] (* Ray Chandler, Dec 06 2006 *)

Crossrefs

Cf. A092022.

Sequence in context: A252556 A028538 A354976 * A176375 A210116 A223509

Adjacent sequences: A123987 A123988 A123989 * A123991 A123992 A123993

Keyword

nonn

Author

Artur Jasinski, Oct 30 2006

Status

approved