id:A023241 - OEIS Search Results

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Numbers n such that n remains prime through 2 iterations of function f(x) = x + 6.

+0
2

5, 7, 11, 17, 31, 41, 47, 61, 67, 97, 101, 151, 167, 227, 251, 257, 271, 347, 367, 557, 587, 601, 607, 641, 647, 727, 941, 971, 1091, 1097, 1117, 1181, 1217, 1277, 1291, 1361, 1427, 1447, 1481, 1487, 1601, 1607, 1657, 1741, 1747, 1777, 1861, 1867, 1901, 1987 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`p, p+6 and p+12 are primes.`
	LINKS	`Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.`
	CROSSREFS	`Sequence in context: A145987 A060449 A046140 this_sequence A106954 A027755 A089785` `Adjacent sequences: A023238 A023239 A023240 this_sequence A023242 A023243 A023244`
	KEYWORD	`nonn`
	AUTHOR	`David W. Wilson (davidwwilson(AT)comcast.net)`

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

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