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 A061893 #3 May 07 2013 12:03:32 %S A061893 1,0,0,3,1,1,1,1,2,3,1,1,1,2,2,3,1,1,1,2,2,3,3,4,5,6,1,1,1,1,1,1,2,2, %T A061893 2,2,2,3,3,3,3,4,4,4,5,5,5,6,6,7,7,8,9,10,1,1,1,1,1,1,1,1,1,1,2,2,2,2, %U A061893 2,2,2,2,2,3,3,3,3,3,3,3,3,4,4,4,4,4,4,4,5,5,5,5,5,5,5,6,6,6,6 %N A061893 Table of Lionel-Levine-sequence generated by (1,0,0). %e A061893 a(15) = 3: (1,0,0),(3),(1,1,1),(1,2,3),(1,1,1,2,2,3) %Y A061893 A061892(6) = 10 = A061893(53), see also A012257. %K A061893 nonn,easy,tabf %O A061893 0,4 %A A061893 _Frank Ellermann_, May 13 2001