Number of n X n binary matrices M (that is, real matrices with entries 0 and 1) such that M^2 is also a binary matrix.
A121231
Number of n X n binary matrices M (that is, real matrices with entries 0 and 1) such that M^2 is also a binary matrix.
Terms
- a(0) =1a(1) =2a(2) =11a(3) =172a(4) =6327a(5) =474286a(6) =67147431a(7) =17080038508
External references
- oeis: A121231