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 A055972 #15 Jan 03 2016 15:54:08
%S A055972 1,2,1,5,1,3,1,2,1,57,1,5,3,1,2847,7,1,1,3,4,4,8,1,1,48,1,1,2,1,2,81,
%T A055972 1,2,3,12,1,1,1,5,1,3,1,6,1,5,3,2,1,2,1,3,1,2,1,1,5,6,96,1,1,1,1,1,3,
%U A055972 1,19
%N A055972 Continued fraction for the number 1 + 1/(e + 1/(e^2 + 1/(e^3 + 1/(e^4 +...)))).
%H A055972 Harry J. Smith, <a href="/A055972/b055972.txt">Table of n, a(n) for n = 0..2000</a>
%H A055972 G. Xiao, <a href="http://wims.unice.fr/~wims/en_tool~number~contfrac.en.html">Contfrac</a>
%H A055972 <a href="/index/Con#confC">Index entries for continued fractions for constants</a>
%e A055972 1.3505436043221124180470983246597483686...
%e A055972 1.350543604322112418047098324... = 1 + 1/(2 + 1/(1 + 1/(5 + 1/(1 + ...)))). - _Harry J. Smith_, May 03 2009
%o A055972 (PARI) f(n)= { x=0; for (i=1, n, x=1/(exp(1+n-i) + x)); 1+x } { allocatemem(932245000); default(realprecision, 2100); y=1.0; n=70; x=f(n); while(x!=y, y=x; n=n+1; x=f(n);); c=contfrac(x); for (n=1, 2001, write("b055972.txt", n-1, " ", c[n])); } \\ _Harry J. Smith_, May 03 2009
%Y A055972 Cf. A100609 Decimal expansion. - _Harry J. Smith_, May 03 2009
%K A055972 cofr,nonn
%O A055972 0,2
%A A055972 _Leroy Quet_, Jul 19 2000