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 A134663 #3 Oct 12 2012 14:39:33 %S A134663 1,1,1,0,0,1,1,2,1,0,2,2,0,0,1,1,3,3,1,3,6,3,0,3,3,0,0,1,1,4,6,4,5,12, %T A134663 12,4,6,12,6,0,4,4,0,0,1,1,5,10,10,10,21,30,20,15,30,30,10,10,20,10,0, %U A134663 5,5,0,0,1,1,6,15,20,21,36,61,60,45,66,90,60,35,60,60,20,15,30,15,0,6,6,0 %N A134663 Triangle read by rows in which n-th row gives the expansion coefficients of (1+x+x^4)^n. %C A134663 The n-th row has 4n+1 entries. %H A134663 S. R. Finch, P. Sebah and Z.-Q. Bai, <a href="http://arXiv.org/abs/0802.2654">Odd Entries in Pascal's Trinomial Triangle</a> (arXiv:0802.2654) %t A134663 CoefficientList[(1+x+x^4)^n, x] %Y A134663 Cf. A027907, A038717. %K A134663 nonn,tabf %O A134663 0,8 %A A134663 _Steven Finch_, Jan 25 2008