%I #8 Nov 08 2017 02:25:43
%S 1,2,4,6,12,20,36,54,108,172,324,530,984,1672,3028,5232,9388
%N Number of zero-energy ground states for one-dimensional periodic fermions with n sites.
%H Noriaki Sannomiya, H. Katsura, Y. Nakayama, <a href="https://arxiv.org/abs/1612.02285">Supersymmetry breaking and Nambu-Goldstone fermions with cubic dispersion</a>, arXiv preprint arXiv:1612.02285 [cond-mat.str-el], 2016. See Table I, line 1.
%Y Cf. A007040, A068911.
%K nonn,more
%O 0,2
%A _N. J. A. Sloane_, Nov 07 2017
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