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 A098266 #9 Jul 15 2013 17:22:13 %S A098266 0,13,27,62,32,110,3188,12078,141356,2085932,3497082,4910326,929922, %T A098266 1189814,4196683,1301478,19560712,6894489,41960008 %N A098266 a(1)=0; for i>=1, a(i+1)=position of first occurrence of a(i) in decimal expansion of e. %C A098266 Recurrence sequence based on positions of digits in decimal places of e. %e A098266 So for example, a(2)=13 because 13th digit of e after decimal point is 0. %e A098266 a(3)=27 because 27th decimal digit of e is 13, a(4)=62 because 62nd to 63rd decimal digits of e form "13" and so on. %Y A098266 Cf. A078197 for the first occurrence of integers in decimal digits of e; A097614 for the analogous recurrence sequence for Pi, also A014777 for positions of integers in decimal digits of Pi. %K A098266 easy,base,nonn %O A098266 0,2 %A A098266 Mark Hudson (mrmarkhudson(AT)hotmail.com), Sep 01 2004 %E A098266 More terms from Ben Ross (bmr180(AT)psu.edu), Feb 01 2006