id:A139403 - OEIS Search Results

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Prime numbers k such that 8k+3 and 8k+5 are also primes.

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7, 13, 43, 103, 127, 181, 223, 241, 283, 421, 433, 733, 787, 853, 1291, 1303, 1531, 1567, 1741, 2017, 2161, 2281, 2593, 2857, 2953, 3163, 3361, 3571, 3673, 4003, 4051, 4441, 4513, 4597, 4663, 4831, 4903, 5503, 5647, 5923, 6067, 6091, 6217, 6361, 6427 (list; graph; listen)

	OFFSET	`1,1`
	MATHEMATICA	`a = {}; Do[If[PrimeQ[8 n + 5] && PrimeQ[8 n + 3] && PrimeQ[n], AppendTo[a, n]], {n, 1, 10000}]; a`
	CROSSREFS	`Cf. A125822, A139402, A139404.` `Sequence in context: A097444 A151781 A047977 this_sequence A087820 A166945 A023286` `Adjacent sequences: A139400 A139401 A139402 this_sequence A139404 A139405 A139406`
	KEYWORD	`nonn`
	AUTHOR	`Artur Jasinski (grafix(AT)csl.pl), Apr 19 2008`

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Last modified November 23 17:09 EST 2009. Contains 167438 sequences.

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