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Search: id:A000849
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| A000849 |
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Number of primes <= product of first n primes [A002110(n)]. |
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+0
7
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| 0, 1, 3, 10, 46, 343, 3248, 42331, 646029, 12283531, 300369796, 8028643010, 259488750744, 9414916809095
(list; graph; listen)
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OFFSET
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0,3
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LINKS
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C. D. Pruitt, A Theorem & Proof on the Density of Primes Utilizing Primorials [Broken link?]
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MATHEMATICA
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a=1; Table[a=a*Prime[n]; PrimePi[a], {n, 1, 13}]
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CROSSREFS
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Cf. A000720, A002110, A003604.
Sequence in context: A143500 A058112 A020008 this_sequence A092429 A005651 A105748
Adjacent sequences: A000846 A000847 A000848 this_sequence A000850 A000851 A000852
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KEYWORD
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nonn,hard,more
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AUTHOR
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James D. Ausfahl, gandalf(AT)hrn.office.ssi.net
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EXTENSIONS
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More terms from David W. Wilson (davidwwilson(AT)comcast.net); last 4 terms from Paul.Zimmermann(AT)loria.fr (Paul Zimmermann).
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