T(n,k)=Number of nXk 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 2 neighboring 1s.
A297431
T(n,k)=Number of nXk 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 2 neighboring 1s.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =1a(6) =1a(7) =7a(8) =3a(9) =1a(10) =1a(11) =12a(12) =14a(13) =4a(14) =1a(15) =1a(16) =18a(17) =26a(18) =22a(19) =6a(20) =1a(21) =1a(22) =33a(23) =43a(24) =42a(25) =68a(26) =9a(27) =1a(28) =1a(29) =73
External references
- oeis: A297431