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%I #8 Sep 30 2017 16:46:08
%S 1,3,25,287,4581,90519,2162901,60249195,1921751145,68980179915,
%T 2753007869745,120897239789655
%N Reflective-symmetric maximal chord diagrams by genus, type II.
%H Evgeniy Krasko, <a href="https://arxiv.org/abs/1709.00796">Counting Unlabelled Chord Diagrams of Maximal Genus</a>, arXiv:1709.00796 [math.CO], 2017. See Table 1, column 3.
%Y The other three sequences in Table 1 are A291172, A275787, A291371.
%K nonn,more
%O 1,2
%A _N. J. A. Sloane_, Sep 20 2017
%E Name clarified by _Evgeniy Krasko_, Sep 30 2017