Number of X-rays of n X n binary matrices with exactly floor(n^2/2) ones.
A290058
Number of X-rays of n X n binary matrices with exactly floor(n^2/2) ones.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =30a(4) =440a(5) =9892a(6) =331950a(7) =15121926a(8) =915201732a(9) =70120569074
External references
- oeis: A290058