Number of binary matrices with n distinct columns and any number of distinct nonzero rows with 2 ones in every column and columns in decreasing lexicographic order.
A331649
Number of binary matrices with n distinct columns and any number of distinct nonzero rows with 2 ones in every column and columns in decreasing lexicographic order.
Terms
- a(0) =1a(1) =0a(2) =3a(3) =17a(4) =230a(5) =3264a(6) =60338a(7) =1287062a(8) =31900620a(9) =893284155a(10) =27972470286a(11) =967596779631
External references
- oeis: A331649