n weight matrix

what i want is a zero-one matrix whose sums of all columns are distinct n. it can be any size. example:

1 0 0 0 0 0

1 1 0 1 0 0

0 0 1 0 0 1

0 0 1 0 0 0

0 1 0 1 0 1

it seems symmetric though but it has a total of weight 1 see the column weight. any combination of the columns are accepted as long as they are unique to each other.

Good day and God bless.

thanks.

[418 byte] By [czetsuyaa] at [2007-10-2 0:11:24]