T(n,k)=1/4 the number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock having two or three distinct clockwise edge differences.
A210335
T(n,k)=1/4 the number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock having two or three distinct clockwise edge differences.
Terms
- a(0) =39a(1) =406a(2) =406a(3) =4200a(4) =11877a(5) =4200a(6) =43519a(7) =344659a(8) =344659a(9) =43519a(10) =450903a(11) =10050240a(12) =27838382a(13) =10050240a(14) =450903a(15) =4672093a(16) =293095459a(17) =2266459861a(18) =2266459861a(19) =293095459a(20) =4672093a(21) =48410727a(22) =8549740834a(23) =184424586007a(24) =517186072378
External references
- oeis: A210335