T(n,k)=Number of nXk arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, without 2-loops or left turns.
A221787
T(n,k)=Number of nXk arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, without 2-loops or left turns.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =1a(8) =0a(9) =0a(10) =0a(11) =3a(12) =0a(13) =0a(14) =0a(15) =0a(16) =8a(17) =5a(18) =1a(19) =0a(20) =0a(21) =0a(22) =21a(23) =24a(24) =16a(25) =0a(26) =0a(27) =0a(28) =0a(29) =55
External references
- oeis: A221787