T(n,k)=Number of nXk 0..2 arrays with no element x(i,j) adjacent to value 2-x(i,j) horizontally, diagonally or antidiagonally.
A232920
T(n,k)=Number of nXk 0..2 arrays with no element x(i,j) adjacent to value 2-x(i,j) horizontally, diagonally or antidiagonally.
Terms
- a(0) =3a(1) =6a(2) =9a(3) =12a(4) =18a(5) =27a(6) =24a(7) =54a(8) =54a(9) =81a(10) =48a(11) =144a(12) =246a(13) =162a(14) =243a(15) =96a(16) =396a(17) =912a(18) =1122a(19) =486a(20) =729a(21) =192a(22) =1080a(23) =3612a(24) =5808a(25) =5118a(26) =1458a(27) =2187a(28) =384a(29) =2952
External references
- oeis: A232920