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A079096 Left primorial, #n, from primorial and analogous to left factorial. 0
1, 3, 9, 39, 249, 2559, 5559, 516069, 10215759, 233308629, 6703001859, 207263491989, 7628001626799, 311878265154009, 13394639596824039, 628284422185315449, 33217442899375360179, 1955977793053587999249 (list; graph; refs; listen; history; internal format)
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 * A143293 A101395 A133189

Adjacent sequences:  A079093 A079094 A079095 * A079097 A079098 A079099

KEYWORD

nonn

AUTHOR

Michael Joseph Halm (hierogamous(AT)lycos.com), Feb 02 2003

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Last modified February 14 00:47 EST 2012. Contains 205567 sequences.