T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000101 or 00010001.
A260177
T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000101 or 00010001.
Terms
- a(0) =40a(1) =74a(2) =74a(3) =183a(4) =167a(5) =183a(6) =409a(7) =419a(8) =419a(9) =409a(10) =950a(11) =1001a(12) =1054a(13) =1001a(14) =950a(15) =2221a(16) =2500a(17) =2598a(18) =2598a(19) =2500a(20) =2221a(21) =5235a(22) =6344a(23) =6813a(24) =6973a(25) =6813a(26) =6344a(27) =5235a(28) =12063a(29) =15847
External references
- oeis: A260177