T(n,k)=Number of nXk 0,1 arrays with adjacent row and column sums unequal.

Terms

a(0) =2a(1) =2a(2) =2a(3) =2a(4) =8a(5) =2a(6) =2a(7) =20a(8) =20a(9) =2a(10) =2a(11) =44a(12) =126a(13) =44a(14) =2a(15) =2a(16) =116a(17) =728a(18) =728a(19) =116a(20) =2a(21) =2a(22) =332a(23) =4374a(24) =10016a(25) =4374a(26) =332a(27) =2a(28) =2a(29) =900