T(n,k)=Half the number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock having exactly two distinct clockwise edge differences.

A209534

T(n,k)=Half the number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock having exactly two distinct clockwise edge differences.

Terms

    a(0) =5a(1) =9a(2) =9a(3) =17a(4) =25a(5) =17a(6) =33a(7) =65a(8) =65a(9) =33a(10) =65a(11) =193a(12) =257a(13) =193a(14) =65a(15) =129a(16) =513a(17) =1025a(18) =1025a(19) =513a(20) =129a(21) =257a(22) =1537a(23) =4097a(24) =6145a(25) =4097a(26) =1537a(27) =257a(28) =513a(29) =4097

External references