T(n,k)=Number of nXk 0..1 arrays with every element equal to 0, 1, 2 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
A300498
T(n,k)=Number of nXk 0..1 arrays with every element equal to 0, 1, 2 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =1a(1) =2a(2) =2a(3) =4a(4) =7a(5) =4a(6) =8a(7) =18a(8) =18a(9) =8a(10) =16a(11) =50a(12) =52a(13) =50a(14) =16a(15) =32a(16) =138a(17) =143a(18) =143a(19) =138a(20) =32a(21) =64a(22) =383a(23) =412a(24) =499a(25) =412a(26) =383a(27) =64a(28) =128a(29) =1063
External references
- oeis: A300498