id:A138325 - OEIS Search Results

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

+0
2

0, 0, 2, 0, 3, 0, 5, 5, 0, 7, 0, 7, 11, 0, 13, 0, 11, 11, 11, 13, 19, 17, 17, 13, 0, 0, 17, 17, 17, 23, 17, 19, 19, 19, 0, 0, 23, 23, 29, 23, 0, 23, 23, 23, 0, 43, 29, 29, 0, 29, 0, 31, 31, 37, 29, 29, 37, 41, 37, 41, 37, 43, 41, 0, 41, 47, 41, 61, 37, 41, 41, 37, 43, 53, 41, 41, 43, 47 (list; graph; listen)

	OFFSET	`1,3`
	COMMENT	`Sequence A138128 counts the number of representations for each n and sequence A138326 lists the values of n that are not represented.`
	LINKS	`T. D. Noe, Table of n, a(n) for n=1..1000`
	CROSSREFS	`Cf. A060749 (primitive roots).` `Sequence in context: A079977 A008799 A011013 this_sequence A117175 A090482 A082857` `Adjacent sequences: A138322 A138323 A138324 this_sequence A138326 A138327 A138328`
	KEYWORD	`nonn`
	AUTHOR	`T. D. Noe (noe(AT)sspectra.com), Mar 14 2008`

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.

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