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

A221337

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

Terms

    a(0) =0a(1) =2a(2) =2a(3) =0a(4) =6a(5) =0a(6) =4a(7) =20a(8) =20a(9) =4a(10) =0a(11) =68a(12) =0a(13) =68a(14) =0a(15) =8a(16) =232a(17) =790a(18) =790a(19) =232a(20) =8a(21) =0a(22) =792a(23) =0a(24) =10704a(25) =0a(26) =792a(27) =0a(28) =16a(29) =2704

External references