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 A171700 #3 Sep 08 2013 13:31:52
%S A171700 0,1,0,0,2,0,2,0,3,0,0,8,0,4,0,4,0,20,0,5,0,0,24,0,40,0,6,0,8,0,84,0,
%T A171700 70,0,7,0,0,64,0,224,0,112,0,8,0,16,0,288,0,504,0,168,0,9,0,0,160,0,
%U A171700 960,0,1008,0,240,0,10,0
%N A171700 Triangle T : T(n,k)= A007318(n,k)*a(n-k) with a(0)=0 and a(n)= A077957(n-1) for n>0.
%C A171700 Diagonal sums : A001353(n+1) alternating with zeros.
%F A171700 Sum_{k, 0<=k<=n} T(n,k)*x^k = A077957(n-1), A000129(n), A007070(n-1), A081179(n), A081180(n), A081182(n), A081183(n), A081184(n), A081185(n), A153593(n) for x = 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 respectively.
%e A171700 Triangle begins : 0 ; 1,0 ; 0,2,0 ; 2,0,3,0 ; 0,8,0,4,0 ; 4,0,20,0,5,0 ; ...
%K A171700 nonn,tabl
%O A171700 0,5
%A A171700 _Philippe Deléham_, Dec 15 2009