A031936 Lower prime of a difference of 18 between consecutive primes.

523, 1069, 1259, 1381, 1759, 1913, 2161, 2503, 2861, 3803, 3889, 4159, 4373, 4423, 4463, 4603, 4703, 4733, 5059, 5209, 5483, 6011, 6229, 6451, 6529, 6581, 6619, 7159, 7351, 7393, 7433, 7459, 7621, 7883, 8191, 8761, 9109, 9293, 9749

Offset

1,1

Comments

Subsequence of A153418: a(1)=523=A153418(46), a(2)=1069=A153418(80), etc. - Zak Seidov, Sep 13 2015

No terms are congruent to 7 mod 10. - Michel Marcus, Sep 14 2015

Links

Charles R Greathouse IV, Table of n, a(n) for n = 1..10000

Index entries for primes, gaps between

Mathematica

Transpose[Select[Partition[Prime[Range[1300]], 2, 1], Last[#] - First[#] == 18 &]][[1]] (* Bruno Berselli, Apr 09 2013 *)

Prog

(Magma) [p: p in PrimesUpTo(10000) | NextPrime(p)-p eq 18]; // Bruno Berselli, Apr 09 2013
(PARI) isok(p) = isprime(p) && (nextprime(p+1) == p+18); \\ Michel Marcus, Sep 14 2015

Crossrefs

Cf. A153418.

Sequence in context: A124587 A095651 A117838 * A066540 A209875 A080912

Adjacent sequences: A031933 A031934 A031935 * A031937 A031938 A031939

Keyword

nonn

Author

Jeff Burch

Status

approved