id:A155736 - OEIS Search Results

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Numbers n such that 4*n^2+2*n-1 is a prime.

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1, 2, 3, 4, 5, 8, 10, 12, 13, 14, 15, 19, 22, 23, 24, 25, 27, 28, 30, 32, 33, 34, 35, 38, 43, 47, 48, 50, 57, 60, 63, 65, 67, 69, 70, 72, 74, 77, 79, 80, 82, 87, 88, 90, 92, 93, 94, 98, 103, 109, 110 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`a(n)=4n^2+2n-1`
	EXAMPLE	`For n=1, a(1)=5, n=2, a(2)=19; n=65, a(65)=17029`
	CROSSREFS	`Cf. A155737, A155738` `Sequence in context: A101547 A047597 A005233 this_sequence A074897 A090556 A080713` `Adjacent sequences: A155733 A155734 A155735 this_sequence A155737 A155738 A155739`
	KEYWORD	`nonn`
	AUTHOR	`Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Jan 26 2009`

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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.

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