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%I #3 Aug 27 2014 16:38:02
%S 5,8,14,27,54,106,217,453,957,2035,4376,9387
%N Number of Steinhaus graphs of order n and diameter 2.
%C It would be good to fill in the values for n<4.
%D Brigham, Robert C.; Dutton, Ronald D. Distances and diameters in Steinhaus graphs. Proceedings of the Twenty-first Southeastern Conference on Combinatorics, Graph Theory, and Computing (Boca Raton, FL, 1990). Congr. Numer. 76 (1990), 7--14. MR1140412 (92h:05050)
%Y Cf. A246320, A246321.
%K nonn,more
%O 4,1
%A _N. J. A. Sloane_, Aug 27 2014