T(n,k) is the number of n X k 0..n*k-1 arrays with upper left zero and lower right n*k-1 and each element differing from its horizontal and vertical neighbors by a power of three.
A265218
T(n,k) is the number of n X k 0..n*k-1 arrays with upper left zero and lower right n*k-1 and each element differing from its horizontal and vertical neighbors by a power of three.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =0a(5) =1a(6) =4a(7) =16a(8) =16a(9) =4a(10) =12a(11) =0a(12) =114a(13) =0a(14) =12a(15) =32a(16) =1958a(17) =17740a(18) =17740a(19) =1958a(20) =32a(21) =109a(22) =0a(23) =959210a(24) =0a(25) =959210a(26) =0a(27) =109a(28) =366a(29) =654833
External references
- oeis: A265218