T(n,k)=Number of nXk arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, without move-in move-out left turns.
A221609
T(n,k)=Number of nXk arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, without move-in move-out left turns.
Terms
- a(0) =0a(1) =1a(2) =0a(3) =2a(4) =2a(5) =0a(6) =4a(7) =10a(8) =4a(9) =0a(10) =8a(11) =53a(12) =54a(13) =8a(14) =0a(15) =16a(16) =269a(17) =811a(18) =287a(19) =16a(20) =0a(21) =32a(22) =1378a(23) =11344a(24) =12270a(25) =1522a(26) =32a(27) =0a(28) =64a(29) =7057
External references
- oeis: A221609