id:A158021 - OEIS Search Results

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Primes such that p, 10*p-1 and (p-1)/2 are all prime.

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11, 23, 83, 107, 167, 179, 227, 347, 479, 587, 839, 863, 983, 1283, 1367, 1439, 1487, 1619, 1823, 1907, 2027, 2039, 2447, 2879, 2963, 2999, 3119, 3203, 3623, 3863, 4127, 4139, 4259, 4283, 4787, 5099, 5483, 5879, 6719, 6779, 6983, 7247, 7703, 7727, 7823 (list; graph; listen)

	OFFSET	`1,1`
	MATHEMATICA	`Flatten[Table[If[PrimeQ[n] && PrimeQ[10*n - 1] && PrimeQ[( n - 1)/2], n, {}], {n, 1, 10000}]]`
	CROSSREFS	`A059455` `Sequence in context: A102273 A104066 A060160 this_sequence A050767 A145918 A077707` `Adjacent sequences: A158018 A158019 A158020 this_sequence A158022 A158023 A158024`
	KEYWORD	`nonn`
	AUTHOR	`Roger L. Bagula and Gary W. Adamson (rlbagulatftn(AT)yahoo.com), Mar 11 2009`

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Last modified December 5 08:23 EST 2009. Contains 170348 sequences.

AT&T Labs Research