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A133735 A000012 * A133734. 1

%I

%S 1,2,0,3,0,1,4,0,2,1,5,0,3,2,2,6,0,4,3,4,2,7,0,5,4,6,4,4,8,0,6,5,8,6,

%T 8,4,9,0,7,6,10,8,12,8,7,10,0,8,7,12,10,16,12,14,8

%N A000012 * A133734.

%C Row sums = A000070: (1, 2, 4, 7, 12, 19, 30, 45,...). Right border = A002865: (1, 0, 1, 1, 2, 2, 4, 4, 7, 8,...).

%F A000012 * A133734 as infinite lower triangular matrices.

%e First few rows of the triangle are:

%e 1;

%e 2, 0;

%e 3, 0, 1;

%e 4, 0, 2, 1;

%e 5, 0, 3, 2, 2;

%e 6, 0, 4, 3, 4, 2;

%e 7, 0, 5, 4, 6, 4, 4;

%e 8, 0, 6, 5, 8, 6, 8, 4;

%e 9, 0, 7, 6, 10, 8, 12, 8, 7;

%e ...

%Y Cf. A133734, A000070.

%K nonn,tabl

%O 0,2

%A _Gary W. Adamson_, Sep 22 2007

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Last modified August 9 00:34 EDT 2020. Contains 336309 sequences. (Running on oeis4.)