T(n,k)=Number of nXk arrays of occupancy after each element moves to some horizontal or vertical neighbor, without move-in move-out left turns.
A221676
T(n,k)=Number of nXk arrays of occupancy after each element moves to some horizontal or vertical neighbor, without move-in move-out left turns.
Terms
- a(0) =0a(1) =1a(2) =1a(3) =2a(4) =5a(5) =2a(6) =4a(7) =27a(8) =27a(9) =4a(10) =8a(11) =139a(12) =400a(13) =139a(14) =8a(15) =16a(16) =715a(17) =5741a(18) =5741a(19) =715a(20) =16a(21) =32a(22) =3666a(23) =81910a(24) =229150a(25) =81910a(26) =3666a(27) =32a(28) =64a(29) =18787
External references
- oeis: A221676