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Number of symmetric primitive Lucas strings of length n.
2

%I #18 Dec 05 2016 09:57:17

%S 1,2,3,4,10,12,28,40,54,90,132,180,260,392,450,752,918,1404,1672,2600,

%T 2898,4818,5336,8424,9350,15288,16254,26656,28594,46530,49476,80928,

%U 84810,140250,146090,239760,250268,412528,426036,702480,726110,1196244,1232208

%N Number of symmetric primitive Lucas strings of length n.

%H Lars Blomberg, <a href="/A250112/b250112.txt">Table of n, a(n) for n = 1..1000</a>

%H A. R. Ashrafi, J. Azarija, K. Fathalikhani, S. Klavzar and M. Petkovsek, <a href="http://www.fmf.uni-lj.si/~klavzar/preprints/Fib-Luc-orbits-submit-2014.pdf">Vertex and edge orbits of Fibonacci and Lucas cubes</a>, 2014; See Table 3.

%H 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.

%Y Cf. A031367, A250113.

%K nonn

%O 1,2

%A _N. J. A. Sloane_, Nov 19 2014

%E More terms from _Lars Blomberg_, Dec 05 2016