Half the number of n X n symmetric binary matrices with no element unequal to a strict majority of its diagonal and antidiagonal neighbors.
A190655
Half the number of n X n symmetric binary matrices with no element unequal to a strict majority of its diagonal and antidiagonal neighbors.
Terms
- a(0) =1a(1) =2a(2) =4a(3) =24a(4) =224a(5) =2862a(6) =53010a(7) =1527552a(8) =65195940a(9) =4097065492a(10) =385902826186
External references
- oeis: A190655