A128260 - OEIS

%I #5 Feb 18 2022 22:10:20

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

%T 7,1,9,8,1,8,0,0,0,8,1,10,1,9,0,1,0,0,0,9,1

%N A128229 * A051731.

%C Row sums = A128261: (1, 3, 6, 9, 14, 14, 26, 18, 35, 31, ...).

%e First few rows of the triangle:

%e   1;

%e   2, 1;

%e   3, 2, 1;

%e   4, 1, 3, 1;

%e   5, 4, 0, 4, 1;

%e   6, 1, 1, 0, 5, 1;

%e   7, 6, 6, 0, 0, 6, 1;

%e   8, 1, 0, 1, 0, 0, 7, 1;

%e   ...

%Y Cf. A128229, A051731, A128261, A128259.

%K nonn,tabl

%O 1,2

%A _Gary W. Adamson_, Feb 21 2007