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Search: id:A074962
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| A074962 |
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Decimal expansion of Glaisher-Kinkelin constant A. |
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+0
4
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| 1, 2, 8, 2, 4, 2, 7, 1, 2, 9, 1, 0, 0, 6, 2, 2, 6, 3, 6, 8, 7, 5, 3, 4, 2, 5, 6, 8, 8, 6, 9, 7, 9, 1, 7, 2, 7, 7, 6, 7, 6, 8, 8, 9, 2, 7, 3, 2, 5, 0, 0, 1, 1, 9, 2, 0, 6, 3, 7, 4, 0, 0, 2, 1, 7, 4, 0, 4, 0, 6, 3, 0, 8, 8, 5, 8, 8, 2, 6, 4, 6, 1, 1, 2, 9, 7, 3, 6, 4, 9, 1, 9, 5, 8, 2, 0, 2, 3, 7, 4, 4, 1, 0, 2, 4
(list; cons; graph; listen)
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OFFSET
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1,2
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COMMENT
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Arise in various asymptotic expressions such as A002109(n)=1^1*2^2*3^3*...*n^n which is asymptotic to A*n^(n^2/2+n/2+1/12)*exp(-n^2/4). See A002109 for more references and links.
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REFERENCES
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K. Knopp, "Theory and applications of infinite series", Dover, p. 555
S. R. Finch, Mathematical constants, Encyclopedia of Mathematics and its Applications, vol. 94, Cambridge University Press, p. 135
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LINKS
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Eric Weisstein's World of Mathematics, Glaisher-Kinkelin Constant
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FORMULA
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A=1.2824271291... A = 2^(1/36)*Pi^(1/6)*exp(1/3*(-Gamma/4+s(2)/3-s(3)/4+...)) where s(k) denotes sum(n>=0, 1/(2n+1)^k) . Closed expressions for A are exp(-zeta'(2)/2/Pi^2 + log(2*Pi)/12 + Gamma/12) or exp(1/12-zeta'(-1))
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PROGRAM
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(PARI) x=10^(-100); exp(1/12-(zeta(-1+x)-zeta(-1))/x)
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CROSSREFS
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Adjacent sequences: A074959 A074960 A074961 this_sequence A074963 A074964 A074965
Sequence in context: A065813 A076344 A090975 this_sequence A064863 A021358 A141449
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KEYWORD
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cons,nonn
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AUTHOR
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Benoit Cloitre (benoit7848c(AT)orange.fr), Oct 05 2002
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EXTENSIONS
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More terms from Sascha Kurz (sascha.kurz(AT)uni-bayreuth.de), Feb 03 2003
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