This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A246998 #23 Aug 13 2020 12:17:18
%S A246998 1,2,2,3,3,5,5,8,9,14,16,26,31,49,64,99,133,209,291,455,657,1022,1510,
%T A246998 2359,3545,5536,8442,13201,20319,31836,49353,77436,120711,189674,
%U A246998 296854,467160,733363,1155647,1818594,2869378,4524081,7146483
%N A246998 Multiplicity of the zero at x=1 of the characteristic polynomial P_n^{C0+}.
%C A246998 Appears to duplicate A129526. - _R. J. Mathar_, Sep 22 2014
%H A246998 A. R. Ashrafi, J. Azarija, K. Fathalikhani, S. Klavzar, et al., <a href="http://www.fmf.uni-lj.si/~klavzar/preprints/Fib-Luc-orbits-August-11-2014.pdf">Orbits of Fibonacci and Lucas cubes, dihedral transformations, and asymmetric strings</a>, 2014.
%H A246998 M. Assis, J. L. Jacobsen, I. Jensen, J.-M. Maillard and B. M. McCoy, <a href="http://arxiv.org/abs/1406.5566">Integrability vs non-integrability: Hard hexagons and hard squares compared</a>, arXiv preprint 1406.5566 [math-ph], 2014. See Eq. A.15.
%K A246998 nonn
%O A246998 1,2
%A A246998 _N. J. A. Sloane_, Sep 18 2014
%E A246998 The initial terms look wrong to me. I have written to the authors.