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Triangle, (1,1,0,0,1,1,0,0,...) in every column.
1

%I #14 Jul 28 2023 10:38:42

%S 1,1,1,0,1,1,0,0,1,1,1,0,0,1,1,1,1,0,0,1,1,0,1,1,0,0,1,1,0,0,1,1,0,0,

%T 1,1,1,0,0,1,1,0,0,1,1,1,1,0,0,1,1,0,0,1,1,0,1,1,0,0,1,1,0,0,1,1,0,0,

%U 1,1,0,0,1,1,0,0,1,1,1,0,0,1,1,0,0,1,1,0,0,1,1

%N Triangle, (1,1,0,0,1,1,0,0,...) in every column.

%e First few rows of the triangle:

%e 1;

%e 1, 1;

%e 0, 1, 1;

%e 0, 0, 1, 1;

%e 1, 0, 0, 1, 1;

%e 1, 1, 0, 0, 1, 1;

%e ...

%Y Cf. A004524 (row sums), A130305 (binomial transform).

%K nonn,tabl,easy

%O 1,1

%A _Gary W. Adamson_, May 20 2007

%E Missing 0 inserted at a(30) and more terms from _Georg Fischer_, Jul 28 2023