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 A151558 #5 Aug 01 2015 10:40:01 %S A151558 1,8,4,0,7,6,8,3,2,8,1,4,6,0,8,2,6,8,9,8,2,0,5,7,4,5,7,7,7,4,3,5,5,7, %T A151558 7,8,8,6,2,1,0,6,0,3,8,7,7,7,2,1,5,4,1,6,0,5,0,8,4,9,0,2,5,0,0,4,7,8, %U A151558 5,1,7,4,0,5,5,6,3,4,7,0,7,7,8,5,8,9,6,0,4,5,7,0,8,6,5,1,7,2,7,8,6,1,9,5,1 %N A151558 Decimal expansion of the Lucas nested (A000204) radical. %C A151558 Analog of A105817 for the Lucas numbers (A000204). %e A151558 1.840768328146082689820574577743557788621060387772... %t A151558 RealDigits[ Fold[ Sqrt[ #1 + #2] &, 0, Reverse@ LucasL@ Range@ 45], 10, 111][[1]] (* _Robert G. Wilson v_, May 29 2009 *) %K A151558 nonn,cons %O A151558 1,2 %A A151558 _Michael David Hirschhorn_, May 21 2009 %E A151558 More terms from _Robert G. Wilson v_, May 29 2009