A238669 Primes p such that (p+7)^2+7 is prime but (p+j)^2+j is not prime for all 0<j<7.

107, 293, 359, 389, 397, 401, 433, 461, 647, 727, 797, 821, 977, 1063, 1163, 1229, 1301, 1367, 1427, 1451, 1499, 1571, 1657, 1721, 1987, 2099, 2111, 2179, 2207, 2351, 2447, 2707, 2797, 2801, 2861, 2957, 3037, 3187, 3221, 3457, 3463, 3527, 3541, 3557, 3607

Offset

1,1

Links

Alois P. Heinz, Table of n, a(n) for n = 1..10000

Mathematica

Select[Prime[Range[600]], PrimeQ[(#+7)^2+7]&&NoneTrue[Table[(#+j)^2+j, {j, 6}], PrimeQ]&] (* Harvey P. Dale, Apr 04 2024 *)

Crossrefs

Column k=7 of A238086.

Sequence in context: A088563 A142222 A123300 * A142018 A106948 A139989

Adjacent sequences: A238666 A238667 A238668 * A238670 A238671 A238672

Keyword

nonn

Author

Alois P. Heinz, Mar 02 2014

Status

approved