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

A221240

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

Terms

    a(0) =0a(1) =0a(2) =0a(3) =0a(4) =5a(5) =0a(6) =0a(7) =53a(8) =53a(9) =0a(10) =0a(11) =467a(12) =1979a(13) =467a(14) =0a(15) =0a(16) =3913a(17) =67710a(18) =67710a(19) =3913a(20) =0a(21) =0a(22) =32299a(23) =2217402a(24) =8959341a(25) =2217402a(26) =32299a(27) =0a(28) =0a(29) =265353

External references