T(n,k) = Number of n X k 0..2 arrays with values 0..2 introduced in row major order and each element equal to no more than two horizontal and vertical neighbors.
A199655
T(n,k) = Number of n X k 0..2 arrays with values 0..2 introduced in row major order and each element equal to no more than two horizontal and vertical neighbors.
Terms
- a(0) =1a(1) =2a(2) =2a(3) =5a(4) =14a(5) =5a(6) =14a(7) =113a(8) =113a(9) =14a(10) =41a(11) =953a(12) =2584a(13) =953a(14) =41a(15) =122a(16) =8037a(17) =59212a(18) =59212a(19) =8037a(20) =122a(21) =365a(22) =67774a(23) =1357484a(24) =3695683a(25) =1357484a(26) =67774a(27) =365a(28) =1094a(29) =571530
External references
- oeis: A199655