login

%I #4 Feb 21 2022 00:18:45

%S 1,2,1,3,4,2,4,7,6,2,5,16,24,16,4,6,15,22,20,10,2,7,36,90,120,90,36,6,

%T 8,35,90,142,140,84,28,4,9,52,170,336,420,336,168,48,6,10,53,168,352,

%U 508,504,336,144,36,4

%N A054522 * A007318.

%C A130584 = A007318 * A054522 Row sums = A130586: (1, 3, 9, 19, 65, 75, 385, ...).

%F A054522 * A007318 as infinite lower triangular matrices.

%e First few rows of the triangle:

%e 1;

%e 2, 1;

%e 3, 4, 2;

%e 4, 7, 6, 2;

%e 5, 16, 24, 16, 4;

%e 6, 15, 22, 20, 10, 2;

%e 7, 36, 90, 120, 90, 36, 6;

%e ...

%Y Cf. A054522, A007318, A130585, A130586.

%K nonn,tabl

%O 0,2

%A _Gary W. Adamson_, Jun 06 2007