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A246319 Number of Steinhaus graphs of order n and diameter 2. 2
5, 8, 14, 27, 54, 106, 217, 453, 957, 2035, 4376, 9387 (list; graph; refs; listen; history; text; internal format)
OFFSET

4,1

COMMENTS

It would be good to fill in the values for n<4.

REFERENCES

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)

LINKS

Table of n, a(n) for n=4..15.

CROSSREFS

Cf. A246320, A246321.

Sequence in context: A192522 A133641 A164094 * A302649 A286835 A112269

Adjacent sequences:  A246316 A246317 A246318 * A246320 A246321 A246322

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane, Aug 27 2014

STATUS

approved

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Last modified February 18 21:20 EST 2020. Contains 332028 sequences. (Running on oeis4.)