T(n,k)=Number of nXk arrays of occupancy after each element moves to some horizontal, diagonal or antidiagonal neighbor, with no occupancy greater than 2.

A221200

T(n,k)=Number of nXk arrays of occupancy after each element moves to some horizontal, diagonal or antidiagonal neighbor, with no occupancy greater than 2.

Terms

    a(0) =0a(1) =1a(2) =0a(3) =2a(4) =9a(5) =0a(6) =4a(7) =10a(8) =49a(9) =0a(10) =8a(11) =196a(12) =46a(13) =289a(14) =0a(15) =16a(16) =720a(17) =9025a(18) =212a(19) =1681a(20) =0a(21) =32a(22) =6400a(23) =58700a(24) =427716a(25) =976a(26) =9801a(27) =0a(28) =64a(29) =34272

External references