Half the number of n X n symmetric binary matrices with no element equal to a strict majority of its diagonal and antidiagonal neighbors.
A190626
Half the number of n X n symmetric binary matrices with no element equal to a strict majority of its diagonal and antidiagonal neighbors.
Terms
- a(0) =1a(1) =0a(2) =2a(3) =6a(4) =42a(5) =324a(6) =4092a(7) =76160a(8) =2171670a(9) =91674436a(10) =5732036632a(11) =535081395254
External references
- oeis: A190626