begin{tabular}{l || l l l l l | l}
  & 1 & 2 & 3 & 4 & 5 & 6\hhline{=#=====|=}
1 & 1 & 1 & 1 & 1 & 1 & 0\
2 & 1 & 1 & 1 & 1 & 1 & 0\
3 & 1 & 1 & 1 & 1 & 1 & 0\
4 & 1 & 1 & 1 & 1 & 1 & 0\
5 & 1 & 1 & 1 & 1 & 1 & 0\hline
6 & 0 & 0 & 0 & 0 & 0 & 1
end{tabular}