id:A103273 - OEIS Search Results

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Number of ways of writing prime(n)-1 in the form prime(i)+prime(j).

+0
1

0, 0, 1, 1, 2, 1, 2, 2, 3, 2, 3, 4, 3, 4, 4, 3, 4, 6, 6, 5, 6, 7, 5, 4, 7, 6, 8, 6, 8, 7, 10, 7, 5, 8, 5, 12, 11, 10, 6, 6, 7, 14, 8, 11, 9, 13, 19, 11, 7, 12, 7, 9, 18, 9, 8, 9, 9, 19, 16, 14, 16, 8, 15, 12, 17, 10, 24, 19, 9, 16, 10, 10, 18, 18, 22, 10, 9, 21, 14, 20, 11, 30, 14, 19, 21, 13, 13 (list; graph; listen)

	OFFSET	`1,5`
	FORMULA	`a(n) = A061358(prime(n)-1). - David Wasserman (dwasserm(AT)earthlink.net), Oct 08 2005`
	EXAMPLE	`11-1=3+7=5+5, so a(5)=2.`
	CROSSREFS	`Adjacent sequences: A103270 A103271 A103272 this_sequence A103274 A103275 A103276` `Sequence in context: A078661 A029263 A097575 this_sequence A025066 A051275 A025799`
	KEYWORD	`nonn`
	AUTHOR	`Yasutoshi Kohmoto (zbi74583(AT)boat.zero.ad.jp), Jan 27 2005`
	EXTENSIONS	`More terms from David Wasserman (dwasserm(AT)earthlink.net), Oct 08 2005`

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

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