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 A047895 #4 Oct 15 2013 22:30:21 %S A047895 0,0,0,1,1,1,1,1,1,1,1,1,1,2,1,2,1,1,2,2,2,1,1,1,1,1,1,1,2,2,2,1,1,2, %T A047895 2,1,2,2,1,2,2,2,2,2,2,2,2,2,1,2,2,2,2,2,2,2,2,1,2,2,2,1,2,2,2,2,2,1, %U A047895 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,3,2,2,2,2,2,2,2,2,2 %N A047895 Difference of decimal orders of Euler and Tangential numbers: deviations of Zigs and Zags. %D A047895 Peters, J. and Stein, J., Matematische Tafeln. Revised Russian Edition, 1968, Moscow. %Y A047895 A047893-A047894. %K A047895 nonn %O A047895 1,14 %A A047895 _Labos Elemer_