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 A104579 #8 Jan 08 2014 15:01:25
%S A104579 1,0,1,1,0,1,2,2,0,1,1,4,3,0,1,4,3,6,4,0,1,5,12,6,8,5,0,1,6,16,24,10,
%T A104579 10,6,0,1,13,24,34,40,15,12,7,0,1,16,53,60,60,60,21,14,8,0,1,25,72,
%U A104579 135,120,95,84,28,16,9,0,1,42,126,200,275,210,140,112,36,18,10,0,1,57,220,381
%N A104579 A Padovan-Jacobsthal convolution triangle.
%C A104579 First column is A052947. Row sums are A077947. Diagonal sums are A052907.
%F A104579 Riordan array (1/(1-x^2-2x^3), x/(1-x^2-2x^3))
%F A104579 T(n,k) = T(n-1,k-1)+T(n-2,k)+2*T(n-3,k), T(0,0)=1, T(n,k)=0 if k>n or if k<0. - _Philippe Deléham_, Jan 08 2014
%e A104579 Rows begin {1},{0,1},{1,0,1},{2,2,0,1},{1,4,3,0,1},{4,3,6,4,0,1},..
%K A104579 easy,nonn,tabl
%O A104579 0,7
%A A104579 _Paul Barry_, Mar 16 2005