Number of n X n matrices with exactly 2 1's in each row, other entries 0.
A066300
Number of n X n matrices with exactly 2 1's in each row, other entries 0.
Terms
- a(0) =0a(1) =1a(2) =27a(3) =1296a(4) =100000a(5) =11390625a(6) =1801088541a(7) =377801998336
External references
- oeis: A066300