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Search: id:A031938
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A031938 Lower prime of a difference of 20 between consecutive primes. +0
8
887, 1637, 3089, 3413, 3947, 5717, 5903, 5987, 6803, 7649, 8243, 8543, 8783, 8867, 9257, 10223, 10433, 10667, 11027, 11093, 11177, 11447, 11597, 11657, 11867, 11987, 13127, 13421, 13649, 14087, 14177, 15473, 16943, 17519, 17807 (list; graph; listen)
OFFSET

1,1

LINKS

Remi Eismann, Table of n, a(n) for n = 1..10000

Index entries for primes, gaps between

EXAMPLE

887 is a term as the next prime is 907.

MATHEMATICA

(*M6*)a=887; S={}; Do[b=NextPrime[a]; If[b-a==20, AppendTo[S, a]]; a=b, {10^4}]; S [From Zak Seidov (zakseidov(AT)yahoo.com), Aug 14 2009]

CROSSREFS

Sequence in context: A020393 A103811 A164513 this_sequence A165504 A136966 A043523

Adjacent sequences: A031935 A031936 A031937 this_sequence A031939 A031940 A031941

KEYWORD

nonn

AUTHOR

Jeff Burch (jmburch(AT)osprey.smcm.edu)

EXTENSIONS

Entries and b-file checked by Zak Seidov Aug 14 2009

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Last modified December 6 19:58 EST 2009. Contains 170429 sequences.


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