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 A050179 #4 Mar 30 2012 18:57:01
%S A050179 1,1,1,1,7,1,1,8,8,1,1,9,35,9,1,1,10,44,44,10,1,1,11,54,154,54,11,1,1,
%T A050179 12,65,208,208,65,12,1,1,13,77,273,637,273,77,13,1,1,14,90,350,910,
%U A050179 910,350,90,14,1,1,15,104,440,1260,2548,1260,440,104,15,1
%N A050179 T(n,k) = M0(n,k,f(n,k)), where M0 is given by A050176 and f(n,k) is the 4th-from-least t for which M0(n,k,t) is not 0.
%C A050179 f(n,k)=2 if 3<=k<=[ (n-1)/2 ], else f(n,k)=2k-n+3.
%e A050179 Rows: {1}; {1,1}; {1,7,1}: {1,8,8,1}; ... (all palindromes)
%K A050179 nonn,tabl
%O A050179 7,5
%A A050179 _Clark Kimberling_