T(n,k)=Number of nXk arrays of occupancy after each element stays put or moves to some king-move neighbor.

A221225

T(n,k)=Number of nXk arrays of occupancy after each element stays put or moves to some king-move neighbor.

Terms

    a(0) =1a(1) =3a(2) =3a(3) =8a(4) =35a(5) =8a(6) =21a(7) =400a(8) =400a(9) =21a(10) =55a(11) =4525a(12) =18768a(13) =4525a(14) =55a(15) =144a(16) =51025a(17) =867776a(18) =867776a(19) =51025a(20) =144a(21) =377a(22) =574800a(23) =39983152a(24) =161854465a(25) =39983152a(26) =574800a(27) =377a(28) =987a(29) =6473175

External references