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 A108952 #7 Mar 31 2012 10:26:04 %S A108952 2,1,4,1,6,9,3,7,7,0,6,2,3,2,6,4,9,2,4,7,8,9,3,4,8,1,8,8,9,3,1,6,1,7, %T A108952 8,3,4,1,3,8,0,9,0,1,5,6,5,9,0,4,5,4,4,3,5,0,0,1,8,1,4,5,7,1,9,1,6,6, %U A108952 7,7,3,6,1,8,1,1,3,9,2,7,9,7,9,8,7,0,3,5,3,3,8,7,1,3,8,9,8,4,0,0,6,2,5,9 %N A108952 Decimal expansion of 1/delta, where delta = Feigenbaum constant. %C A108952 In a dynamical system exhibiting period-doubling cascades,1/delta is the limiting ratio by which the nonlinear parameter's range of stable values shrinks after each successive onset of period-doubling. %e A108952 1/delta=0.21416937706232649247893481889316178341380 %Y A108952 Cf. A006890. %K A108952 nonn,cons %O A108952 0,1 %A A108952 _Lekraj Beedassy_, Jul 21 2005 %E A108952 Removed leading zero and adjusted offset - _R. J. Mathar_, Feb 06 2009