id:A063958 - OEIS Search Results

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Sum of non-unitary prime factors of n: sum of those prime factors for which the exponent exceeds 1.

+0
3

0, 0, 0, 2, 0, 0, 0, 2, 3, 0, 0, 2, 0, 0, 0, 2, 0, 3, 0, 2, 0, 0, 0, 2, 5, 0, 3, 2, 0, 0, 0, 2, 0, 0, 0, 5, 0, 0, 0, 2, 0, 0, 0, 2, 3, 0, 0, 2, 7, 5, 0, 2, 0, 3, 0, 2, 0, 0, 0, 2, 0, 0, 3, 2, 0, 0, 0, 2, 0, 0, 0, 5, 0, 0, 5, 2, 0, 0, 0, 2, 3, 0, 0, 2, 0, 0, 0, 2, 0, 3, 0, 2, 0, 0, 0, 2, 0, 7, 3, 7, 0, 0, 0, 2, 0 (list; graph; listen)

	OFFSET	`1,4`
	LINKS	`Harry J. Smith, Table of n, a(n) for n=1,...,1000`
	PROGRAM	`(PARI) { for (n=1, 1000, f=factor(n)~; a=0; for (i=1, length(f), if (f[2, i]>1, a+=f[1, i])); write("b063958.txt", n, " ", a) ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Sep 04 2009]`
	CROSSREFS	`A056169, A056170, A034444, A048105.` `Sequence in context: A143063 A054923 A057108 this_sequence A126164 A145007 A151670` `Adjacent sequences: A063955 A063956 A063957 this_sequence A063959 A063960 A063961`
	KEYWORD	`nonn`
	AUTHOR	`Labos E. (labos(AT)ana.sote.hu), Sep 04 2001`

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Last modified November 25 08:46 EST 2009. Contains 167481 sequences.

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