Half the number of n X n symmetric binary matrices with no element unequal to a strict majority of its king-move neighbors.
A190656
Half the number of n X n symmetric binary matrices with no element unequal to a strict majority of its king-move neighbors.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =2a(4) =5a(5) =20a(6) =86a(7) =486a(8) =3495a(9) =31938a(10) =368832a(11) =5412981a(12) =100924470a(13) =2390092072a(14) =71686035608
External references
- oeis: A190656