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 A110779 #16 Mar 29 2025 19:54:39 %S A110779 2,2,7,2,1,7,8,2,2,1,8,7,1,8,8,2,2,2,8,1,4,8,5,7,9,1,0,8,4,8,5,2,2,2, %T A110779 3,2,5,8,3,1,6,4,0,8,2,5,8,7,7,9,4,1,7,0,1,8,3,4,5,8,2,5,6,2,6,2,2,2, %U A110779 4,3,9,2,7,5,7,8,5,3,7,1,2,6,4,4,7,0,0,8,9,2,3,5,6,8,9,7,9,7,9,9,5,4,9,1,5 %N A110779 Fractalization of e. %C A110779 Self-descriptive sequence: even terms are the sequence itself, odd terms are the digits of the decimal expansion of e. %H A110779 Clark Kimberling, <a href="http://faculty.evansville.edu/ck6/integer/fractals.html">Fractal sequences</a>. %F A110779 a(2n) = a(n); a(2n+1) = digits of e. %Y A110779 Cf. A001113, A003602. %Y A110779 Cf. A110766 (of Pi), A110812 (of sqrt 2), A382130 (of phi). %K A110779 easy,nonn,base %O A110779 1,1 %A A110779 _Alexandre Wajnberg_, Sep 15 2005