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

A217346

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

Terms

    a(0) =0a(1) =0a(2) =0a(3) =0a(4) =1a(5) =0a(6) =0a(7) =7a(8) =7a(9) =0a(10) =0a(11) =38a(12) =144a(13) =38a(14) =0a(15) =0a(16) =190a(17) =2389a(18) =2389a(19) =190a(20) =0a(21) =0a(22) =918a(23) =37114a(24) =120908a(25) =37114a(26) =918a(27) =0a(28) =0a(29) =4367

External references