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A078106 a(n) = A003022(n) - A000217(n-1). 2
0, 0, 0, 1, 2, 4, 6, 8, 10, 17, 19, 28, 36, 46, 57, 63, 63, 75, 93, 123, 125, 119, 149, 180, 167, 202, 207 (list; graph; refs; listen; history; text; internal format)
OFFSET
2,5
COMMENTS
Previous name was: Number of distances not measured by the shortest Golomb ruler with n marks (i.e., length of shortest Golomb ruler with n marks minus number of distances measured by that ruler).
REFERENCES
J. C. P Miller, Difference bases. Three problems in additive number theory. Computers in number theory (Proc. Sci. Res. Council Atlas Sympos. No. 2, Oxford, 1969), pp. 299-322. Academic Press, London, 1971. MR0316269 (47 #4817) - From N. J. A. Sloane, Jun 05 2012
Rhys Price Jones, Gracelessness, Proc. 10th S.-E. Conf. Combin., Graph Theory and Computing, 1979, pp. 547-552. - From N. J. A. Sloane, Jun 05 2012
LINKS
FORMULA
a(n) = A003022(n) - A000217(n-1).
CROSSREFS
Sequence in context: A175299 A088008 A067720 * A353764 A111082 A100433
KEYWORD
nonn
AUTHOR
Michael Gilleland, Nov 24 2002
EXTENSIONS
Made consistent with A003022 by Peter Munn, Jul 23 2019
a(24)-a(28) computed using A003022 by Floris P. van Doorn, Mar 06 2023
STATUS
approved

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Last modified June 19 00:22 EDT 2024. Contains 373492 sequences. (Running on oeis4.)