T(n,k) = number of n X k 0..2 arrays with new values 0..2 introduced in row major order and no element equal to any horizontal or vertical neighbor (colorings ignoring permutations of colors).
A207997
T(n,k) = number of n X k 0..2 arrays with new values 0..2 introduced in row major order and no element equal to any horizontal or vertical neighbor (colorings ignoring permutations of colors).
Terms
- a(0) =1a(1) =1a(2) =1a(3) =2a(4) =3a(5) =2a(6) =4a(7) =9a(8) =9a(9) =4a(10) =8a(11) =27a(12) =41a(13) =27a(14) =8a(15) =16a(16) =81a(17) =187a(18) =187a(19) =81a(20) =16a(21) =32a(22) =243a(23) =853a(24) =1302a(25) =853a(26) =243a(27) =32a(28) =64a(29) =729
External references
- oeis: A207997