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%I #6 Jan 08 2014 22:38:59
%S 1,2,4,5,10,13,16
%N Maximal size of equidistant permutation array R(n,2).
%D CRC Handbook of Combinatorial Designs, 1996, p. 327.
%D Mathon, Rudolf; 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.
%Y Cf. A005677.
%K nonn,hard,more
%O 3,2
%A _N. J. A. Sloane_.