id:A086172 - OEIS Search Results

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Numbers n such that n*prime[n]+1 is prime.

+0
8

1, 2, 4, 6, 24, 30, 36, 42, 72, 84, 98, 100, 116, 126, 128, 144, 162, 174, 206, 212, 228, 288, 312, 318, 324, 336, 350, 360, 406, 408, 416, 418, 452, 458, 466, 498, 510, 522, 528, 530, 536, 546, 548, 556, 604, 654, 660, 666, 682, 684, 690, 708, 710, 728, 738 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`See also A086173, A086174, A086175, A086176, A086177.`
	MATHEMATICA	`Select[Range[1000], PrimeQ[ # Prime[ # ]+1]&]`
	CROSSREFS	`Cf. A086173, A086174, A086175, A086176, A086177.` `Adjacent sequences: A086169 A086170 A086171 this_sequence A086173 A086174 A086175` `Sequence in context: A108439 A045960 A028988 this_sequence A106274 A077633 A006933`
	KEYWORD	`easy,nonn`
	AUTHOR	`Zak Seidov (zakseidov(AT)yahoo.com), Jul 11 2003`

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

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