z 22 + 21 z 20 + 190 z 18 + 969 z 16 + 3060 z 14 + 6188 z 12 + 8008 z 10 + 6435 z 8 + 3003 z 6 + 715 z 4 + 66 z 2 + 1 {\displaystyle z^{22}+21z^{20}+190z^{18}+969z^{16}+3060z^{14}+6188z^{12}+8008z^{10}+6435z^{8}+3003z^{6}+715z^{4}+66z^{2}+1}
