A134870 - OEIS

%I #6 Mar 27 2022 18:31:30

%S 1,1,1,1,1,1,1,2,1,1,1,1,1,1,1,1,2,2,1,1,1,1,1,1,1,1,1,1,1,2,1,2,1,1,

%T 1,1,1,1,2,1,1,1,1,1,1,1,2,1,1,2,1,1,1,1,1

%N A051731 + A000012 - A103451.

%C Row sums = A134871: (1, 2, 3, 5, 5, 8, 7, 10, 10, 12, 11, ...).

%F A051731 + A000012 - A103451 as infinite lower triangular matrices.

%e First few rows of the triangle:

%e   1;

%e   1, 1;

%e   1, 1, 1;

%e   1, 2, 1, 1;

%e   1, 1, 1, 1, 1;

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

%e   1, 1, 1, 1, 1, 1, 1;

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

%e   ...

%Y Cf. A051731, A134871, A103451, A000012.

%K nonn,tabl

%O 1,8

%A _Gary W. Adamson_, Nov 14 2007