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A185941 First of a run of 4 or more consecutive primes which all equal 2 (mod 3). 3
251, 1493, 1889, 1901, 2393, 2399, 4373, 4391, 4451, 4673, 4679, 5237, 5351, 5381, 6311, 7079, 7103, 7793, 7817, 7823, 7883, 8111, 9203, 9209, 9467, 9473, 9833, 10181, 11393, 11783, 11789, 12113, 12641, 12647, 12653, 12923, 13103, 13451, 14741, 15749 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Subsequence of terms of A185938 such that A185938(k+1) = nextprime(A185938(k)).

LINKS

G. C. Greubel, Table of n, a(n) for n = 1..5000

MATHEMATICA

pr6Q[l_]:=And@@(Mod[#, 3]==2&/@l)

Transpose[Select[Partition[Prime[Range[2000]], 4, 1], pr6Q]][[1]]  (* Harvey P. Dale, Feb 13 2011 *)

PROG

(PARI) s=Mod([1, 1, 1, 1]*2, 3); o=vector(#s); i=0; forprime(p=1, 1e4, o[i++%#o+1]=p; o-s|print1(o[(i+1)%#o+1]", "))

CROSSREFS

Cf. A185938.

Sequence in context: A339182 A008917 A025396 * A215607 A099734 A054800

Adjacent sequences:  A185938 A185939 A185940 * A185942 A185943 A185944

KEYWORD

nonn

AUTHOR

M. F. Hasler, Feb 06 2011

STATUS

approved

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Last modified June 14 15:19 EDT 2021. Contains 345025 sequences. (Running on oeis4.)