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 A098320 #7 Jul 12 2015 19:49:16 %S A098320 0,27,88,308,267,922,811,40,150,173,555,1751,3389,5859,10579,227865, %T A098320 560966,1382684,12331649,118447869 %N A098320 a(1)=0; for i>=1, a(i+1)=position of first occurrence of a(i) in decimal expansion of 1/e. %C A098320 Recurrence sequence based on positions of digits in decimal places of 1/e. %e A098320 So for example, a(2)=27 because 27th digit of 1/e after decimal point is 0. %e A098320 a(3)=88 because 88th decimal digit of 1/e is where 27 appears, %e A098320 a(4)=308 because 308th to 309th decimal digits of 1/e form "88" and so on. %Y A098320 Cf. A097614 for the analogous recurrence sequence for Pi, A098266 for e recurrence, A098289 for log(2) recurrence, A098290 for Zeta(3) recurrence, A098319 for 1/Pi recurrence. See A068985 for digits of 1/e. %K A098320 easy,nonn,base %O A098320 0,2 %A A098320 Mark Hudson (mrmarkhudson(AT)hotmail.com), Sep 03 2004 %E A098320 More terms from Ben Ross (bmr180(AT)psu.edu), Feb 01 2006