%I
%S 26,72,198,570,1641,4725,13605,39174
%N Ground state degeneracy of a periodic chain for angle theta = 3*Pi/2.
%H YunTak Oh, Hosho Katsura, HyunYong Lee, Jung Hoon Han, <a href="https://arxiv.org/abs/1709.01344">Proposal of a spinone chain model with competing dimer and trimer interactions</a>, arXiv:1709.01344 [condmat.strel], 2017.
%Y Cf. A005248, A197723, A299797.
%K nonn,more
%O 3,1
%A _Michael De Vlieger_, Feb 19 2018
