T(n,k)=Number of nXk 0..3 arrays with no element less than a strict majority of its horizontal, vertical, diagonal and antidiagonal neighbors.
A231586
T(n,k)=Number of nXk 0..3 arrays with no element less than a strict majority of its horizontal, vertical, diagonal and antidiagonal neighbors.
Terms
- a(0) =4a(1) =4a(2) =4a(3) =16a(4) =28a(5) =16a(6) =50a(7) =124a(8) =124a(9) =50a(10) =144a(11) =602a(12) =2352a(13) =602a(14) =144a(15) =422a(16) =2776a(17) =32650a(18) =32650a(19) =2776a(20) =422a(21) =1268a(22) =12922a(23) =381076a(24) =1245468a(25) =381076a(26) =12922a(27) =1268a(28) =3823a(29) =60720
External references
- oeis: A231586