id:A121820 - OEIS Search Results

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Numbers m such that greatest prime divisor of (m-th prime + 1) is 3.

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1, 3, 5, 7, 9, 15, 16, 20, 28, 43, 76, 83, 118, 150, 164, 190, 377, 597, 801, 889, 1091, 1561, 1814, 2601, 3016, 6253, 7281, 13005, 15167, 25607, 27191, 37126, 39419, 41357, 62946, 78155, 83024, 184383, 702826, 1146234, 1203569, 1595690, 1871469 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`Or, position of 3 in A023509 Greatest prime divisor of n-th prime + 1.`
	MATHEMATICA	`Select[Range[990000], FactorInteger[Prime[ # ]+1][[ -1, 1]]==3&]`
	CROSSREFS	`Cf. A023509.` `Sequence in context: A098758 A029608 A145388 this_sequence A006995 A163410 A064896` `Adjacent sequences: A121817 A121818 A121819 this_sequence A121821 A121822 A121823`
	KEYWORD	`nonn`
	AUTHOR	`Zak Seidov (zakseidov(AT)yahoo.com), Sep 09 2006`
	EXTENSIONS	`More terms from Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), May 18 2007`

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Last modified November 24 14:25 EST 2009. Contains 167438 sequences.

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