id:A074041 - OEIS Search Results

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Product of first n single (i.e. non-twin) primes.

+0
2

2, 46, 1702, 79994, 4239682, 284058694, 22440636826, 1862572856558, 165768984233662, 16079591470665214, 1816993836185169182, 230758217195516486114, 30229326452612659680934 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`a(n) = 5*A002110(A049084(A074038(n)))/A074040(k), where k is the largest number such that A006512(k)<A007510(n).`
	FORMULA	`a(1) = A007510(1) and a(n) = a(n-1)*A007510(n) for n>1.`
	EXAMPLE	`The first four single primes are 2, 23, 37 and 47, therefore a(4)=22337*47=79994.`
	CROSSREFS	`Sequence in context: A066555 A012001 A012006 this_sequence A000191 A000192 A124690` `Adjacent sequences: A074038 A074039 A074040 this_sequence A074042 A074043 A074044`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)lhsystems.com), Aug 13 2002`

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.

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