A160183 - OEIS

%I #11 May 31 2013 14:29:09

%S 1,2,1,3,1,1,5,2,1,1,6,2,1,1,1,10,4,2,1,1,1,11,4,2,1,1,1,1,16,6,3,2,1,

%T 1,1,1,19,7,4,2,1,1,1,1,1,26,10,5,3,2,1,1,1,1,1

%N Triangle, read by rows, obtained by dropping right diagonal from A160182.

%C A054525 * A160183 = triangle A160182. Mobius transform A054525 of the triangle shifts to the left adding I, I = Identity matrix.

%C Left border = A003238 starting (1, 2, 3, 5, 6, 10, 11, 16, 19,...).

%F A054525 * triangle A160182, also obtained by shifting triangle A160182 to the right, deleting the (1,1,1,...) right border.

%e First few rows of the triangle =

%e 1;

%e 2, 1;

%e 3, 1, 1;

%e 5, 2, 1, 1;

%e 6, 2, 1, 1, 1;

%e 10, 4, 2, 1, 1, 1;

%e 11, 4, 2, 1, 1, 1, 1;

%e 16, 6, 3, 2, 1, 1, 1, 1;

%e 19, 7, 4, 2, 1, 1, 1, 1, 1;

%e 26, 10, 5, 3, 2, 1, 1, 1, 1, 1;

%e ...

%Y Cf. A160182, A068336.

%K nonn,tabl

%O 1,2

%A _Gary W. Adamson_, May 03 2009