T(n,k)=Number of nXk 0..1 arrays with every element equal to 0, 1, 2 or 3 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
A300472
T(n,k)=Number of nXk 0..1 arrays with every element equal to 0, 1, 2 or 3 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =1a(1) =2a(2) =2a(3) =4a(4) =8a(5) =4a(6) =8a(7) =29a(8) =29a(9) =8a(10) =16a(11) =108a(12) =160a(13) =108a(14) =16a(15) =32a(16) =401a(17) =925a(18) =925a(19) =401a(20) =32a(21) =64a(22) =1490a(23) =5363a(24) =8608a(25) =5363a(26) =1490a(27) =64a(28) =128a(29) =5536
External references
- oeis: A300472