z 26 + 25 z 24 + 276 z 22 + 1771 z 20 + 7315 z 18 + 20349 z 16 + 38760 z 14 + 50388 z 12 + 43758 z 10 + 24310 z 8 + 8008 z 6 + 1365 z 4 + 91 z 2 + 1 {\displaystyle z^{26}+25z^{24}+276z^{22}+1771z^{20}+7315z^{18}+20349z^{16}+38760z^{14}+50388z^{12}+43758z^{10}+24310z^{8}+8008z^{6}+1365z^{4}+91z^{2}+1}