OFFSET
1,3
REFERENCES
CRC Handbook of Combinatorial Designs, 1996, p. 327.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
LINKS
Fausto A. C. Cariboni, Lower bound with solution for a(9), Feb 17 2019.
Rudolf Mathon, Bounds for equidistant permutation arrays of index one, Combinatorial Mathematics: Proceedings of the Third International Conference (New York, 1985), 303-309, Ann. New York Acad. Sci., 555, New York Acad. Sci., New York, 1989.
CROSSREFS
KEYWORD
nonn,hard,nice
AUTHOR
STATUS
approved