T(n,k)=Number of nXk 0..3 arrays with new values 0..3 introduced in row major order and no element equal to any horizontal, vertical or antidiagonal neighbor (colorings ignoring permutations of colors).
A208050
T(n,k)=Number of nXk 0..3 arrays with new values 0..3 introduced in row major order and no element equal to any horizontal, vertical or antidiagonal neighbor (colorings ignoring permutations of colors).
Terms
- a(0) =1a(1) =1a(2) =1a(3) =2a(4) =2a(5) =2a(6) =5a(7) =8a(8) =8a(9) =5a(10) =14a(11) =32a(12) =44a(13) =32a(14) =14a(15) =41a(16) =128a(17) =244a(18) =244a(19) =128a(20) =41a(21) =122a(22) =512a(23) =1356a(24) =1904a(25) =1356a(26) =512a(27) =122a(28) =365a(29) =2048
External references
- oeis: A208050