id:A154732 - OEIS Search Results

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Integers n such that (n^3+n^2)-+1 are primes.

+0
2

2, 5, 9, 11, 12, 26, 44, 47, 62, 69, 71, 89, 125, 140, 147, 179, 219, 254, 264, 285, 294, 312, 317, 326, 341, 344, 384, 407, 461, 495, 659, 680, 714, 740, 837, 845, 861, 866, 867, 957, 989, 1071, 1079, 1152, 1215, 1310, 1437, 1481, 1499, 1511, 1530, 1577 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`2^3+2^2=12-+1=primes,...`
	MATHEMATICA	`lst={}; Do[k=n^3+n^2; If[PrimeQ[k-1]&&PrimeQ[k+1], AppendTo[lst, n]], {n, 8!}]; lst`
	CROSSREFS	`Cf. A111503, A154731` `Sequence in context: A110781 A115248 A005123 this_sequence A080154 A069829 A022429` `Adjacent sequences: A154729 A154730 A154731 this_sequence A154733 A154734 A154735`
	KEYWORD	`nonn`
	AUTHOR	`Vladimir Orlovsky (4vladimir(AT)gmail.com), Jan 14 2009`

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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.

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