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A006475 Number of 2-tournaments on n nodes.
(Formerly M2185)
0
2, 324, 48869983488 (list; graph; refs; listen; history; text; internal format)
OFFSET

4,1

REFERENCES

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

Paul K. Stockmeyer, Who is the best doubles tennis player? An introduction to k-tournaments, pp. 1083-1091 of Y. Alavi et al., eds., Graph Theory, Combinatorics and Applications. Wiley, NY, 2 vols., 1991.

LINKS

Table of n, a(n) for n=4..6.

Index entries for sequences related to tournaments

CROSSREFS

Sequence in context: A094402 A262637 A028483 * A282430 A012601 A012606

Adjacent sequences:  A006472 A006473 A006474 * A006476 A006477 A006478

KEYWORD

nonn,bref

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified October 20 17:57 EDT 2018. Contains 316398 sequences. (Running on oeis4.)