T(n,k)=Number of nXk binary arrays with top left value 1 and no two ones adjacent horizontally, vertically, diagonally or antidiagonally.
A228506
T(n,k)=Number of nXk binary arrays with top left value 1 and no two ones adjacent horizontally, vertically, diagonally or antidiagonally.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =2a(4) =1a(5) =2a(6) =3a(7) =3a(8) =3a(9) =3a(10) =5a(11) =5a(12) =12a(13) =5a(14) =5a(15) =8a(16) =11a(17) =29a(18) =29a(19) =11a(20) =8a(21) =13a(22) =21a(23) =88a(24) =87a(25) =88a(26) =21a(27) =13a(28) =21a(29) =43
External references
- oeis: A228506