A031938 - OEIS

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A031938

Lower prime of a difference of 20 between consecutive primes.

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; refs; listen; history; internal format)

	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: A103811 A190354 A164513 * A165504 A136966 A202446` `Adjacent sequences: A031935 A031936 A031937 * 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 February 13 13:45 EST 2012. Contains 205486 sequences.