%I #9 Oct 12 2024 02:02:47
%S 1,0,2,0,2,4,0,6,8,8,0,22,28,24,16,0,90,112,96,64,32,0,394,484,416,
%T 288,160,64,0,1806,2200,1896,1344,800,384,128,0,8558,10364,8952,6448,
%U 4000,2112,896,256,0,41586,50144,43392,31616,20160,11264,5376,2048,512,0
%N Triangle T(n,k), read by rows, given by [0,1,2,1,2,1,2,1,2,1,2,...] DELTA [2,0,0,0,0,0,0,0,0,...] where DELTA is the operator defined in A084938.
%C Riordan array (1, 2x*f(x)) where f(x) is the g.f. of A001003. Riordan production matrix is : (0, (2-x)/(1-x)).
%F Sum_{k=0..n} T(n,k) = A006318(n).
%e Triangle begins:
%e 1 ;
%e 0,2 ;
%e 0,2,4 ;
%e 0,6,8,8 ;
%e 0,22,28,24,16 ; ...
%Y Cf. A104219, A108891.
%K nonn,tabl
%O 0,3
%A _Philippe Deléham_, Jan 23 2010