%N a(1)=0; for i>=1, a(i+1)=position of first occurrence of a(i) in decimal expansion of e.
%C Recurrence sequence based on positions of digits in decimal places of e.
%e So for example, a(2)=13 because 13th digit of e after decimal point is 0.
%e 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 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.
%A Mark Hudson (mrmarkhudson(AT)hotmail.com), Sep 01 2004
%E More terms from Ben Ross (bmr180(AT)psu.edu), Feb 01 2006