Search: id:A013680
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%I A013680
%S A013680 1,12,6,1,3,1,4,183,1,1,2,1,3,1,1,5,4,2,7,23,1,1,1,1,3,
%T A013680 2,4,2,2,22,1,13,5,1,4,2,1,3,1,1,1,6,11,40,1,7,5,2,4,1,
%U A013680 2,3,14,9,1,33,78,1,12,4,1,2,551,1,1,1,1,1,1,2,1,9,2,7
%N A013680 Continued fraction for zeta(4).
%C A013680 zeta(4) = Pi^4/90 = 1.0823232337111381915160036965411679027747... [From 
               Harry J. Smith (hjsmithh(AT)sbcglobal.net), Apr 29 2009]
%H A013680 T. D. Noe, <a href="b013680.txt">Table of n, a(n) for n = 1..10000</a>
%H A013680 G. Xiao, <a href="http://wims.unice.fr/~wims/en_tool~number~contfrac.en.html">
               Contfrac</a>
%H A013680 <a href="Sindx_Con.html#confC">Index entries for continued fractions 
               for constants</a>
%e A013680 zeta(4) = 1 + 1/(12 + 1/(6 + 1/(1 + 1/(3 + ...)))) [From Harry J. Smith 
               (hjsmithh(AT)sbcglobal.net), Apr 29 2009]
%o A013680 (PARI) { allocatemem(932245000); default(realprecision, 21000); x=contfrac(Pi^4/
               90); for (n=1, 20000, write("b013680.txt", n, " ", x[n])); } [From 
               Harry J. Smith (hjsmithh(AT)sbcglobal.net), Apr 29 2009]
%Y A013680 Sequence in context: A110185 A038331 A028578 this_sequence A033963 A131570 
               A033332
%Y A013680 Adjacent sequences: A013677 A013678 A013679 this_sequence A013681 A013682 
               A013683
%K A013680 nonn,cofr
%O A013680 1,2
%A A013680 N. J. A. Sloane (njas(AT)research.att.com).

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