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Triangle read by rows, A054525 * A143311, 1<=k<=n.
1

%I #2 Mar 30 2012 17:25:31

%S 1,3,2,8,0,3,12,6,0,4,24,0,0,0,5,24,16,9,0,0,6,48,0,0,0,0,0,7,48,24,0,

%T 12,0,0,0,8,72,0,24,0,0,0,0,0,9,72,48,0,0,15,0,0,0,0,10,120,0,0,0,0,0,

%U 0,0,0,0,11,96,48,36,32,0,18,0,0,0,0,0,12,168,0,0,0,0,0,0,0,0,0,0,0,13

%N Triangle read by rows, A054525 * A143311, 1<=k<=n.

%C Left border = A007434.

%C Row sums = A069097: (1, 5, 11, 2, 29, 55,...)

%F Mobius transform of triangle A143311

%e First few rows of the triangle =

%e 1;

%e 3, 2;

%e 8, 0, 3;

%e 12, 6, 0, 4;

%e 24, 0, 0, 0, 5;

%e 24, 16, 9, 0, 0, 6;

%e 48, 0, 0, 0, 0, 0, 7;

%e 48, 24, 0, 12, 0, 0, 0, 8;

%e ...

%Y Cf. A054525, A143311, A007434, A069097.

%K nonn,tabl

%O 1,2

%A _Gary W. Adamson_, Aug 06 2008