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Euler transform applied twice to partition triangle A008284.
4

%I #12 Feb 18 2023 14:42:18

%S 1,1,3,1,3,6,1,6,9,14,1,6,18,23,27,1,9,27,54,57,58,1,9,39,87,140,131,

%T 111,1,12,51,150,259,353,295,223,1,12,69,210,470,702,832,637,424,1,15,

%U 84,314,749,1379,1803,1917,1350,817,1,15,105,416,1176,2352,3730,4403,4245,2789,1527

%N Euler transform applied twice to partition triangle A008284.

%H Alois P. Heinz, <a href="/A055885/b055885.txt">Rows n = 1..150, flattened</a>

%H N. J. A. Sloane, <a href="/transforms.txt">Transforms</a>

%e 1;

%e 1, 3;

%e 1, 3, 6;

%e 1, 6, 9, 14;

%e 1, 6, 18, 23, 27;

%e ...

%Y Row sums give A007713.

%Y Main diagonal gives A001970.

%Y Cf. A055884, A055886.

%K nonn,tabl

%O 1,3

%A _Christian G. Bower_, Jun 09 2000