id:A137460 - OEIS Search Results

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Prime numbers n such that n^2 +- (n+1) are primes.

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3, 5, 17, 71, 101, 131, 677, 839, 857, 1091 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`3^2 +- 4 -> ( 5,13) Primes,` `5^2 +- 6 -> (19,31) Primes`
	MATHEMATICA	`Select[Prime[Range[800]], PrimeQ[ #^2 - (# + 1)] && PrimeQ[ #^2 + (# + 1)] &]`
	CROSSREFS	`Sequence in context: A097144 A085749 A125957 this_sequence A102295 A102846 A100003` `Adjacent sequences: A137457 A137458 A137459 this_sequence A137461 A137462 A137463`
	KEYWORD	`nonn`
	AUTHOR	`Vladimir Orlovsky (4vladimir(AT)gmail.com), Apr 21 2008`

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Last modified December 3 01:16 EST 2008. Contains 151161 sequences.