T(n,k)=Number of nXk 0..2 arrays with adjacent row and column sums unequal.

Terms

a(0) =3a(1) =6a(2) =6a(3) =12a(4) =52a(5) =12a(6) =24a(7) =352a(8) =352a(9) =24a(10) =48a(11) =2444a(12) =8460a(13) =2444a(14) =48a(15) =96a(16) =17508a(17) =194636a(18) =194636a(19) =17508a(20) =96a(21) =192a(22) =124340a(23) =4439916a(24) =14394092a(25) =4439916a(26) =124340a(27) =192a(28) =384a(29) =872940