id:A045546 - OEIS Search Results

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

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17

2, 3, 4, 5, 6, 8, 9, 10, 11, 13, 15, 16, 19, 20, 21, 24, 26, 28, 30, 31, 35, 38, 39, 41, 44, 45, 46, 48, 50, 53, 54, 55, 56, 59, 60, 64, 65, 66, 68, 70, 76, 83, 85, 86, 89, 93, 94, 96, 100, 101, 103, 114, 115, 120, 125, 126, 130, 131, 134, 138, 140 (list; graph; listen)

	OFFSET	`1,1`
	REFERENCES	`L. Poletti, Le serie dei numeri primi appartenente alle due forme quadratiche (A) n^2+n+1 e (B) n^2+n-1 ..., Atti della Reale Accademia Nazionale dei Lincei, Memorie della Classe di Scienze Fisiche, Matematiche e Naturali, s. 6. 3 (1929), 193-218.`
	CROSSREFS	`Equals A002328-1. Cf. A002327, A002384.` `Sequence in context: A068398 A133194 A022774 this_sequence A050026 A129143 A039225` `Adjacent sequences: A045543 A045544 A045545 this_sequence A045547 A045548 A045549`
	KEYWORD	`nonn,nice,easy`
	AUTHOR	`Paul Jobling (paul.jobling(AT)whitecross.com)`

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Last modified August 29 17:54 EDT 2008. Contains 143238 sequences.

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