T(n,k)=Number of nXk 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 0 or 2 neighboring 1s.
A297457
T(n,k)=Number of nXk 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 0 or 2 neighboring 1s.
Terms
- a(0) =2a(1) =3a(2) =4a(3) =5a(4) =8a(5) =8a(6) =8a(7) =25a(8) =19a(9) =16a(10) =13a(11) =57a(12) =92a(13) =48a(14) =32a(15) =21a(16) =156a(17) =285a(18) =390a(19) =120a(20) =64a(21) =34a(22) =384a(23) =1143a(24) =1677a(25) =1652a(26) =299a(27) =128a(28) =55a(29) =1009
External references
- oeis: A297457