T(n,k)=Number of nXk 0..1 arrays with each 1 horizontally or vertically adjacent to 0, 1, 2 or 4 1s.
A295716
T(n,k)=Number of nXk 0..1 arrays with each 1 horizontally or vertically adjacent to 0, 1, 2 or 4 1s.
Terms
- a(0) =2a(1) =4a(2) =4a(3) =8a(4) =16a(5) =8a(6) =16a(7) =57a(8) =57a(9) =16a(10) =32a(11) =209a(12) =385a(13) =209a(14) =32a(15) =64a(16) =768a(17) =2580a(18) =2580a(19) =768a(20) =64a(21) =128a(22) =2816a(23) =17364a(24) =31985a(25) =17364a(26) =2816a(27) =128a(28) =256a(29) =10329
External references
- oeis: A295716