id:A083339 - OEIS Search Results

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Number of distinct prime factors of n that occur in prime-partitions confirming Goldbach's conjectures.

+0
1

0, 0, 0, 1, 0, 1, 0, 0, 1, 1, 0, 0, 0, 1, 2, 0, 0, 0, 0, 0, 2, 1, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 2, 1, 2, 0, 0, 1, 2, 0, 0, 0, 0, 0, 2, 1, 0, 0, 1, 0, 2, 0, 0, 0, 2, 0, 2, 1, 0, 0, 0, 1, 2, 0, 2, 0, 0, 0, 2, 0, 0, 0, 0, 1, 2, 0, 2, 0, 0, 0, 1, 1, 0, 0, 2, 1, 2, 0, 0, 0, 2, 0, 2, 1, 2, 0, 0, 0, 2, 0, 0, 0, 0, 0, 3 (list; graph; listen)

	OFFSET	`1,15`
	LINKS	`Eric Weisstein's World of Mathematics, Goldbach Conjecture.` `Index entries for sequences related to Goldbach conjecture`
	EXAMPLE	`n = 14 = 27 = 3+11=7+7, only one factor of 14 occurs: a(14)=1;` `n = 15 = 35 = 2+2+11=3+5+7=5+5+5, both factors of 15 occur:` `a(15)=2.`
	CROSSREFS	`Cf. A001221, A083338, A045917, A054860.` `Sequence in context: A097798 A065205 A036272 this_sequence A133827 A028633 A074039` `Adjacent sequences: A083336 A083337 A083338 this_sequence A083340 A083341 A083342`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)lhsystems.com), Apr 24 2003`

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Last modified July 24 12:00 EDT 2008. Contains 142294 sequences.

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