z 14 + 13 z 12 + 65 z 10 + 157 z 8 + 189 z 6 + 105 z 4 + 21 z 2 + 1 {\displaystyle z^{14}+13z^{12}+65z^{10}+157z^{8}+189z^{6}+105z^{4}+21z^{2}+1}
