id:A094210 - OEIS Search Results

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Numbers n such that n^2 + 3n + 1 is a prime.

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1, 2, 3, 4, 5, 7, 8, 9, 10, 12, 14, 15, 18, 19, 20, 23, 25, 27, 29, 30, 34, 37, 38, 40, 43, 44, 45, 47, 49, 52, 53, 54, 55, 58, 59, 63, 64, 65, 67, 69, 75, 82, 84, 85, 88, 92, 93, 95, 99, 100, 102, 113, 114, 119, 124, 125, 129, 130, 133, 137, 139, 140, 143, 144, 147, 148 (list; graph; listen)

	OFFSET	`1,2`
	MATHEMATICA	`Select[ Range[150], PrimeQ[ #^2 + 3# + 1] &] (from Robert G. Wilson v May 29 2004)`
	CROSSREFS	`Cf. A002327.` `Adjacent sequences: A094207 A094208 A094209 this_sequence A094211 A094212 A094213` `Sequence in context: A071163 A006644 A024898 this_sequence A050728 A129268 A039169`
	KEYWORD	`easy,nonn`
	AUTHOR	`Giovanni Teofilatto (g.teofilatto(AT)tiscalinet.it), May 27 2004`
	EXTENSIONS	`Edited and extended by Robert G. Wilson v (rgwv(AT)rgwv.com), May 29 2004`

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Last modified May 16 23:01 EDT 2008. Contains 139884 sequences.

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