A131052 - OEIS

%I #4 Feb 21 2022 00:25:01

%S 1,2,2,4,3,3,8,8,4,4,16,15,15,5,5,32,32,26,26,6,6,64,63,63,42,42,7,7,

%T 128,128,120,120,64,64,8,8

%N A131047 * A000012.

%C Row sums = A087447: (1, 4, 10, 24, 56, ...). A131053 = A000012 * A131047.

%F A131047 * A000012 as infinite lower triangular matrices.

%e First few rows of the triangle:

%e    1;

%e    2,  2;

%e    4,  3,  3;

%e    8,  8,  4,  4;

%e   16, 15, 15,  5,  5;

%e   32, 32, 26, 26,  6,  6;

%e   64, 63, 63, 42, 42,  7,  7;

%e   ...

%Y Cf. A131047, A087447, A131053.

%K nonn,tabl

%O 1,2

%A _Gary W. Adamson_, Jun 12 2007