id:A049493 - OEIS Search Results

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Numbers n such that n and n+4^k are all primes for k=1,2,3.

+0
3

3, 7, 37, 43, 67, 163, 757, 823, 967, 1087, 1213, 1303, 1423, 2293, 2377, 3187, 3343, 3847, 5653, 5923, 8677, 8803, 9157, 9277, 9787, 11257, 11617, 11923, 12097, 13693, 14653, 14767, 14827, 15667, 15733, 16417, 18127, 18397, 20113, 20743, 26293 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`3,3+4=7,3+16=19,3+64=67 are all primes`
	CROSSREFS	`Cf. A023200.` `Sequence in context: A081010 A100377 A167169 this_sequence A020463 A057625 A087208` `Adjacent sequences: A049490 A049491 A049492 this_sequence A049494 A049495 A049496`
	KEYWORD	`nonn`
	AUTHOR	`Labos E. (labos(AT)ana.sote.hu)`

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Last modified December 1 13:27 EST 2009. Contains 167806 sequences.

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