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 A178131 #2 Mar 30 2012 17:28:09 %S A178131 1,4,5,5,7,4,8,6,5,2,0,5,1,0,3,0,5,8,9,3,9,7,8,9,0,6,8,1,2,4,6,1,1,9, %T A178131 1,4,5,1,1,4,9,0,4,1,0,1,7,8,2,5,8,3,2,7,6,9,3,0,6,8,9,7,8,6,5,7,1,8, %U A178131 0,0,3,1,0,3,9,0,7,8,3,0,9,7,6,3,6,0,6,3,8,0,4,6,1,6,4,9,0,2,9,9,8,8,4,2,8 %N A178131 Decimal expansion of (11+3*sqrt(21))/17. %C A178131 Continued fraction expansion of (11+3*sqrt(21))/17 is A131800. %e A178131 (11+3*sqrt(21))/17 = 1.45574865205103058939... %Y A178131 Cf. A010477 (decimal expansion of sqrt(21)), A131800 (repeat 1, 2, 5, 6). %K A178131 cons,nonn %O A178131 1,2 %A A178131 _Klaus Brockhaus_, May 20 2010