A133737 - OEIS

%I #6 Mar 23 2022 01:05:35

%S 1,2,1,3,1,2,4,2,2,3,5,2,2,3,6,6,3,4,3,6,7,7,3,4,3,6,7,14,8,4,4,6,6,7,

%T 14,17,9,4,6,6,6,7,14,17,27,10,5,6,6,12,7,14,17,27,34

%N A000012 * A130162.

%C Row sums = A026905, partial sums of A000041, the partition numbers with offset 1, = (1, 3, 6, 11, 18, 29, 44, 66, ...).

%F A000012 * A130162 as infinite lower triangular matrices.

%e First few rows of the triangle:

%e   1;

%e   2, 1;

%e   3, 1, 2;

%e   4, 2, 2, 3;

%e   5, 2, 2, 3, 6;

%e   6, 3, 4, 3, 6, 7;

%e   7, 3, 4, 3, 6, 7, 14;

%e   ...

%Y Cf. A130162, A026905, A000041.

%K nonn,tabl

%O 1,2

%A _Gary W. Adamson_, Sep 22 2007