T(n,k) = Number of n X k 0..3 arrays with no element equal to exactly one horizontal or vertical neighbor, with new values 0..3 introduced in row major order.
A240774
T(n,k) = Number of n X k 0..3 arrays with no element equal to exactly one horizontal or vertical neighbor, with new values 0..3 introduced in row major order.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =2a(4) =5a(5) =2a(6) =5a(7) =28a(8) =28a(9) =5a(10) =14a(11) =196a(12) =475a(13) =196a(14) =14a(15) =41a(16) =1418a(17) =8319a(18) =8319a(19) =1418a(20) =41a(21) =122a(22) =10314a(23) =147231a(24) =357943a(25) =147231a(26) =10314a(27) =122a(28) =365a(29) =75138
External references
- oeis: A240774