id:A138306 - OEIS Search Results

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Least prime p such that 2n = p + g, where g is a prime primitive root of p, or 0 if there is no such prime p.

+0
2

0, 0, 0, 5, 7, 7, 0, 0, 11, 13, 17, 13, 0, 17, 23, 19, 23, 0, 0, 23, 23, 31, 43, 29, 37, 41, 37, 37, 41, 41, 43, 0, 47, 61, 41, 43, 67, 47, 47, 67, 59, 53, 73, 47, 47, 61, 53, 59, 67, 0, 59, 61, 59, 67, 97, 89, 97, 79, 71, 61, 79, 71, 73, 67, 71, 71, 97, 83, 71, 137, 113, 0, 103, 89 (list; graph; listen)

	OFFSET	`1,4`
	COMMENT	`Goldbach meets prime primitive prime roots. Sequence A138118 gives the number of representations for each 2n and sequence A138307 lists the values of 2n that are not represented.`
	LINKS	`T. D. Noe, Table of n, a(n) for n=1..1000`
	CROSSREFS	`Cf. A138305 (prime primitive roots).` `Sequence in context: A059249 A114603 A100554 this_sequence A154802 A001620 A101456` `Adjacent sequences: A138303 A138304 A138305 this_sequence A138307 A138308 A138309`
	KEYWORD	`nonn`
	AUTHOR	`T. D. Noe (noe(AT)sspectra.com), Mar 14 2008`

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.

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