T(n,k)=Number of nXk arrays of occupancy after each element moves to some horizontal, vertical or antidiagonal neighbor, without 2-loops or left turns.

A221828

T(n,k)=Number of nXk arrays of occupancy after each element moves to some horizontal, vertical or antidiagonal neighbor, without 2-loops or left turns.

Terms

    a(0) =0a(1) =0a(2) =0a(3) =0a(4) =3a(5) =0a(6) =0a(7) =16a(8) =14a(9) =0a(10) =0a(11) =73a(12) =202a(13) =64a(14) =0a(15) =0a(16) =333a(17) =2879a(18) =2930a(19) =292a(20) =0a(21) =0a(22) =1519a(23) =40983a(24) =115417a(25) =41618a(26) =1332a(27) =0a(28) =0a(29) =6929

External references