%I #9 Dec 27 2015 17:35:22

%S 1,0,1,0,1,1,0,4,2,1,0,19,9,3,1,0,100,46,15,4,1,0,562,254,82,22,5,1,0,

%T 3304,1476,474,128,30,6,1,0,20071,8893,2847,773,185,39,7,1,0,124996,

%U 55046,17587,4796,1165,254,49,8,1,0,793774,347922,111006,30378,7461,1665,336,60,9,1

%N Riordan array (1, x*f(x)) where f(x) is the g.f. of A007564.

%C Triangle T(n,k), 0<=k<=n, read by rows, given by (0, 1, 3, 1, 3, 1, 3, 1, 3, ...) DELTA (1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ...) where DELTA is the operator defined in A084938.

%H Alois P. Heinz, <a href="/A265435/b265435.txt">Rows n = 0..140, flattened</a>

%e Triangle begins:

%e 1

%e 0, 1

%e 0, 1, 1

%e 0, 4, 2, 1

%e 0, 19, 9, 3, 1

%e 0, 100, 46, 15, 4, 1

%e Production matrix begins:

%e 0, 1

%e 0, 1, 1

%e 0, 3, 1, 1

%e 0, 9, 3, 1, 1

%e 0, 27, 9, 3, 1, 1

%e 0, 81, 27, 9, 3, 1, 1

%Y Cf. A007564, A108524 (row sums).

%K nonn,tabl

%O 0,8

%A _Philippe Deléham_, Dec 09 2015