T(n,k)=Number of nXk 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1 or 2 neighboring 1s.
A297506
T(n,k)=Number of nXk 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1 or 2 neighboring 1s.
Terms
- a(0) =1a(1) =2a(2) =1a(3) =4a(4) =10a(5) =1a(6) =7a(7) =31a(8) =29a(9) =1a(10) =12a(11) =68a(12) =110a(13) =87a(14) =1a(15) =21a(16) =218a(17) =314a(18) =531a(19) =280a(20) =1a(21) =37a(22) =729a(23) =1829a(24) =2281a(25) =2534a(26) =876a(27) =1a(28) =65a(29) =2097
External references
- oeis: A297506