T(n,k)=1/4 the number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock having one or three distinct clockwise edge differences.
A210077
T(n,k)=1/4 the number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock having one or three distinct clockwise edge differences.
Terms
- a(0) =33a(1) =313a(2) =313a(3) =2908a(4) =7653a(5) =2908a(6) =27129a(7) =183628a(8) =183628a(9) =27129a(10) =252951a(11) =4437262a(12) =11333893a(13) =4437262a(14) =252951a(15) =2358878a(16) =107248254a(17) =707627792a(18) =707627792a(19) =107248254a(20) =2358878a(21) =21997263a(22) =2593403383a(23) =44179487805a(24) =114628150378a(25) =44179487805
External references
- oeis: A210077