id:A090563 - OEIS Search Results

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Values of n such that 5n^2 + 5n + 1 is a prime.

+0
14

1, 2, 3, 4, 5, 6, 7, 11, 13, 14, 15, 16, 17, 19, 21, 22, 24, 25, 26, 30, 32, 35, 36, 38, 43, 44, 49, 52, 54, 55, 60, 61, 62, 63, 66, 69, 70, 71, 73, 74, 79, 80, 81, 82, 85, 87, 88, 93, 94, 101, 104, 106, 107, 109, 110, 112, 114, 115, 117, 123, 127, 128, 131, 135, 137, 138 (list; graph; listen)

	OFFSET	`0,2`
	MATHEMATICA	`Do[s=5n^2+5n+1; If[PrimeQ[s], Print[n]], {n, 1, 1000}]`
	CROSSREFS	`Cf. A090562.` `Sequence in context: A099466 A032976 A115037 this_sequence A045745 A054010 A051948` `Adjacent sequences: A090560 A090561 A090562 this_sequence A090564 A090565 A090566`
	KEYWORD	`nonn`
	AUTHOR	`Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Dec 11 2003`
	EXTENSIONS	`More terms from Labos E. (labos(AT)ana.sote.hu), Dec 12 2003`

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

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