Number of n X n matrices over {0,1} with rows and columns summing to 3, rows and columns sorted (>) by value.
A181345
Number of n X n matrices over {0,1} with rows and columns summing to 3, rows and columns sorted (>) by value.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =1a(4) =2a(5) =12a(6) =87a(7) =662a(8) =5611a(9) =51141a(10) =509277a(11) =5504398a(12) =64122940a(13) =800741192a(14) =10673478573a(15) =151323048909
External references
- oeis: A181345