T(n,k)=Number of nXk 0..3 arrays with no element x(i,j) adjacent to value 3-x(i,j) horizontally, diagonally or antidiagonally, and top left element zero.
A232955
T(n,k)=Number of nXk 0..3 arrays with no element x(i,j) adjacent to value 3-x(i,j) horizontally, diagonally or antidiagonally, and top left element zero.
Terms
- a(0) =1a(1) =3a(2) =4a(3) =9a(4) =21a(5) =16a(6) =27a(7) =129a(8) =147a(9) =64a(10) =81a(11) =771a(12) =1881a(13) =1029a(14) =256a(15) =243a(16) =4629a(17) =22971a(18) =27441a(19) =7203a(20) =1024a(21) =729a(22) =27771a(23) =283131a(24) =685251a(25) =400329a(26) =50421a(27) =4096a(28) =2187a(29) =166629
External references
- oeis: A232955