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 A129394 #7 May 20 2014 14:52:32 %S A129394 0,1,2,1,2,-5,-8,-5,2,3,9,4,0,4,9,3,4,19,12,-16,-32,-16,12,19,4,5, %T A129394 -107,-116,-28,76,120,76,-28,-116,-107,5,6,287,276,96,-64,-132,-144, %U A129394 -132,-64,96,276,287,6,7,-367,-380,-300,-196,8,268,392,268,8,-196,-300,-380,-367,7,8,-245,-260,352,992,940,144,-804,-1216 %N A129394 Triangle read by rows: T(r,c)=T(r,c-1)+T(r,c+1)+T(r-1,c-1). %C A129394 Like A129392, except edge elements=0,1,2,3,4,5,... %H A129394 R. J. Mathar, <a href="/A129392/a129392.pdf">Comments on A129392, A129394 and A129396</a> %Y A129394 Cf. A129392, A129395. %K A129394 sign,tabf %O A129394 0,3 %A A129394 _Jonas Wallgren_, Apr 13 2007 %E A129394 Corrected and extended by _R. J. Mathar_, Jan 17 2008