id:A079096 - OEIS Search Results

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Left primorial, #n, from primorial and analogous to left factorial.

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1, 3, 9, 39, 249, 2559, 5559, 516069, 10215759, 233308629, 6703001859, 207263491989, 7628001626799, 311878265154009, 13394639596824039, 628284422185315449, 33217442899375360179, 1955977793053587999249 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`a(n) = sum of product of p(i) from i = 1 to n, where p(i) = n-th prime`
	EXAMPLE	`a(3)=9 because 1+2+6=9, the sum of the first three primorial numbers`
	CROSSREFS	`Cf. A003422, A002110.` `Sequence in context: A030799 A058105 A090012 this_sequence A143293 A101395 A133189` `Adjacent sequences: A079093 A079094 A079095 this_sequence A079097 A079098 A079099`
	KEYWORD	`nonn`
	AUTHOR	`Michael Joseph Halm (hierogamous(AT)lycos.com), Feb 02 2003`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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