A131228 - OEIS

%I #4 Mar 30 2012 17:25:21

%S 1,3,4,1,3,7,3,1,3,10,1,3,1,3,13,3,1,3,1,3,16,1,3,1,3,1,3,19,3,1,3,1,

%T 3,1,3,22,1,3,1,3,1,3,25,3,1,3,1,3,1,3,1,3,28

%N 3*A051340 - 2*A128174.

%C Row sums = A131229.

%F 3*A051340 - 2*A128174 as infinite lower triangular matrices.

%e First few rows of the triangle are:

%e 1;

%e 3, 4;

%e 1, 3, 7;

%e 3, 1, 3, 10;

%e 1, 3, 1, 3, 13;

%e ...

%Y Cf. A051340, A128174, A131229, A131227.

%K nonn

%O 0,2

%A _Gary W. Adamson_, Jun 20 2007