T(n,k)=Number of nXk arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, without move-in move-out straight through or left turns.

A221755

T(n,k)=Number of nXk arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, without move-in move-out straight through or left turns.

Terms

    a(0) =0a(1) =1a(2) =0a(3) =0a(4) =2a(5) =0a(6) =1a(7) =1a(8) =4a(9) =0a(10) =0a(11) =9a(12) =0a(13) =8a(14) =0a(15) =1a(16) =17a(17) =43a(18) =1a(19) =16a(20) =0a(21) =0a(22) =64a(23) =44a(24) =241a(25) =0a(26) =32a(27) =0a(28) =1a(29) =171

External references