id:A078838 - OEIS Search Results

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a(n)=sum(k=1,(p(n)-1)*(p(n)-2),floor((k*p(n))^(1/3))) where p(n) denotes the n-th prime.

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0, 2, 30, 120, 630, 1122, 2760, 3978, 7392, 15498, 19140, 33390, 46020, 53382, 70380, 102102, 142158, 157530, 210210, 251160, 273492, 348348, 405162, 501468, 652080, 737550, 782952, 879270, 930258, 1038072, 1480500, 1626690, 1863540 (list; graph; listen)

	OFFSET	`1,2`
	LINKS	`E. M. Weisstein, Prime sums`
	FORMULA	`a(n)=(1/4)* (3prime(n)-5)(prime(n)-2)*(prime(n)-1)`
	CROSSREFS	`Sequence in context: A134644 A085637 A157870 this_sequence A089288 A154413 A007030` `Adjacent sequences: A078835 A078836 A078837 this_sequence A078839 A078840 A078841`
	KEYWORD	`nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Dec 08 2002`

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Last modified December 4 15:11 EST 2009. Contains 170347 sequences.

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