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

A221804

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

Terms

    a(0) =0a(1) =0a(2) =0a(3) =0a(4) =9a(5) =0a(6) =0a(7) =56a(8) =56a(9) =0a(10) =0a(11) =378a(12) =1107a(13) =378a(14) =0a(15) =0a(16) =2475a(17) =27692a(18) =27692a(19) =2475a(20) =0a(21) =0a(22) =16256a(23) =657057a(24) =2341962a(25) =657057a(26) =16256a(27) =0a(28) =0a(29) =106629

External references