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Search: id:A117871
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| 1, 6, 9, 1, 7, 9, 9, 2, 0, 9, 8, 2, 1, 7, 1, 2, 3, 5, 1, 3, 3, 9, 2, 6, 1, 8, 0, 6, 7, 8, 7, 6, 3, 1, 8, 6, 9, 8, 2, 3, 6, 9, 3, 7, 6, 2, 9, 2, 5, 8, 1, 9, 1, 3, 4, 5, 5, 6, 9
(list; cons; graph; listen)
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OFFSET
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1,2
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COMMENT
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It follows from the Mingarelli reference that this number is irrational.
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LINKS
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Angelo B. Mingarelli, Abstract factorials of arbitrary sets of integers, May 29 2007.
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EXAMPLE
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1.6917992098217123513392618067876318698236937629258191345569...
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MAPLE
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Digits := 60 : A092143 := proc(n) option remember ; local dvs ; if n = 1 then 1 ; else dvs := numtheory[divisors](n) ; A092143(n-1)*mul(i, i=dvs) ; fi ; end: A129635 := proc(isum) a := 0.0 ; for i from 1 to isum do a := a+1.0/A092143(i) ; print(evalf(a)) ; od ; RETURN(a) ; end: A129635(200) ; - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Sep 02 2007
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CROSSREFS
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Cf. A092143.
Sequence in context: A078196 A020792 A135154 this_sequence A011454 A115145 A021595
Adjacent sequences: A117868 A117869 A117870 this_sequence A117872 A117873 A117874
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KEYWORD
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cons,easy,nonn,more
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AUTHOR
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Jonathan Vos Post (jvospost3(AT)gmail.com), May 31 2007
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EXTENSIONS
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More terms from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Sep 02 2007
Edited by njas, Sep 16 2007 and May 06 2008
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