Thanks to everyone who made a donation during our annual appeal!
To see the list of donors, or make a donation, see the
OEIS Foundation home page.
Allen J. Schwenk, How many rinds can a finite sequence of pairs have?, pp. 713-739 of Y. Alavi et al., eds., Graph Theory, Combinatorics and Applications. Wiley, NY, 2 vols., 1991.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
Table of n, a(n) for n=1..14.
R. K. Guy, Letters to N. J. A. Sloane, 1986-88
Sequence in context: A119853 A136201 A058082 * A054358 A268658 A074128
Adjacent sequences: A005672 A005673 A005674 * A005676 A005677 A005678
N. J. A. Sloane, R. K. Guy