This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A098290 #9 Jul 12 2015 19:44:31
%S A098290 0,2,1,10,208,380,394,159,10,208,380,394,159,10,208,380,394,159,10,
%T A098290 208,380,394,159,10,208,380,394,159,10,208,380,394,159,10,208,380,394,
%U A098290 159,10,208,380,394,159,10,208,380,394,159,10,208,380,394,159,10
%N A098290 Recurrence sequence based on positions of digits in decimal places of Zeta(3) (Apery's constant).
%C A098290 This recurrence sequence starts to repeat quite quickly because 1 appears at the 10th digit of Zeta(3), which is also where 159 starts.
%C A098290 Can the transcendental numbers such that recurrence relations of this kind eventually repeat be characterized? - _Nathaniel Johnston_, Apr 30 2011
%F A098290 a(0)=0, p(i)=position of first occurrence of a(i) in decimal places of Zeta(3), a(i+1)=p(i).
%e A098290 Zeta(3) = 1.2020569031595942853997...
%e A098290 a(0)=0, a(1)=2 because 2nd decimal = 0, a(2)=1 because first digit = 2, etc.
%p A098290 with(StringTools): Digits:=400: G:=convert(evalf(Zeta(3)-1), string): a[0]:=0: for n from 1 to 50 do a[n]:=Search(convert(a[n-1], string), G)-1:printf("%d, ", a[n-1]):od: # _Nathaniel Johnston_, Apr 30 2011
%Y A098290 Cf. A002117 for digits of Zeta(3). Other recurrence sequences: A097614 for Pi, A098266 for e, A098289 for log(2), A098290 for Zeta(3), A098319 for 1/Pi, A098320 for 1/e, A098321 for gamma, A098322 for G, A098323 for 1/G, A098324 for Golden Ratio (phi), A098325 for sqrt(Pi), A098326 for sqrt(2), A120482 for sqrt(3), A189893 for sqrt(5), A098327 for sqrt(e), A098328 for 2^(1/3).
%K A098290 nonn,base
%O A098290 0,2
%A A098290 Mark Hudson (mrmarkhudson(AT)hotmail.com), Sep 02 2004