T(n,k)=Number of nXk 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 0, 1 or 3 neighboring 1s.
A296578
T(n,k)=Number of nXk 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 0, 1 or 3 neighboring 1s.
Terms
- a(0) =2a(1) =4a(2) =4a(3) =7a(4) =11a(5) =7a(6) =13a(7) =31a(8) =31a(9) =13a(10) =24a(11) =90a(12) =135a(13) =90a(14) =24a(15) =44a(16) =254a(17) =616a(18) =616a(19) =254a(20) =44a(21) =81a(22) =728a(23) =2782a(24) =4543a(25) =2782a(26) =728a(27) =81a(28) =149a(29) =2078
External references
- oeis: A296578