T(n,k)=Half the number of nXk binary arrays with the number of 1-1 adjacencies equal to the number of 0-0 adjacencies.

A183253

T(n,k)=Half the number of nXk binary arrays with the number of 1-1 adjacencies equal to the number of 0-0 adjacencies.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =3a(5) =1a(6) =2a(7) =6a(8) =6a(9) =2a(10) =3a(11) =18a(12) =25a(13) =18a(14) =3a(15) =6a(16) =60a(17) =164a(18) =164a(19) =60a(20) =6a(21) =10a(22) =210a(23) =1092a(24) =2101a(25) =1092a(26) =210a(27) =10a(28) =20a(29) =756

External references