T(n,k)=Number of nXk 0..1 arrays with each 1 adjacent to 3 or 4 king-move neighboring 1s.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =1a(6) =1a(7) =3a(8) =3a(9) =1a(10) =1a(11) =4a(12) =6a(13) =4a(14) =1a(15) =1a(16) =8a(17) =9a(18) =9a(19) =8a(20) =1a(21) =1a(22) =17a(23) =26a(24) =16a(25) =26a(26) =17a(27) =1a(28) =1a(29) =31