T(n,k)=Number of nXk 0..2 arrays x(i,j) with each element diagonally or antidiagonally next to at least one element with value 2-x(i,j).

A230068

T(n,k)=Number of nXk 0..2 arrays x(i,j) with each element diagonally or antidiagonally next to at least one element with value 2-x(i,j).

Terms

    a(0) =0a(1) =0a(2) =0a(3) =0a(4) =9a(5) =0a(6) =0a(7) =9a(8) =9a(9) =0a(10) =0a(11) =81a(12) =45a(13) =81a(14) =0a(15) =0a(16) =225a(17) =441a(18) =441a(19) =225a(20) =0a(21) =0a(22) =1089a(23) =3645a(24) =15129a(25) =3645a(26) =1089a(27) =0a(28) =0a(29) =3969

External references