Number of n X n (0,1,2)-matrices with every row sum 3 and column sum 3.
A134646
Number of n X n (0,1,2)-matrices with every row sum 3 and column sum 3.
Terms
- a(0) =0a(1) =2a(2) =31a(3) =1344a(4) =111920a(5) =16214000a(6) =3758757240
External references
- oeis: A134646