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 A098322 #11 Jul 12 2015 19:49:38 %S A098322 0,16,48,101,421,2374,7728,9449,17685,83666,71168,128130,555251, %T A098322 412816,271385,1111695,1910101,11633401,14851698,9668058,43227391, %U A098322 159078942 %N A098322 Recurrence sequence based on positions of digits in decimal places of Catalan's constant, G (often also called K). %F A098322 a(1)=0, p(i)=position of first occurrence of a(i) in decimal places of G, a(i+1)=p(i). %e A098322 So for example, a(2)=16 because 16th digit of G is 0. %e A098322 a(3)=48 because 16 appears at the 48th-49th digits of G, a(4)=101 because the 101st to 102nd digits of G form "48" and so on. %Y A098322 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. A006752 for digits of Catalan's constant. %K A098322 easy,nonn,base %O A098322 0,2 %A A098322 Mark Hudson (mrmarkhudson(AT)hotmail.com), Sep 03 2004 %E A098322 14 more terms. 159078942 does not occur within first 2 billion digits of Catalan's constant. _Sean A. Irvine_, Sep 02 2009