A002087 - OEIS

A002087

Number of point-symmetric tournaments with 2n+1 nodes.
(Formerly M0578 N0211)

1, 1, 2, 3, 4, 6, 16, 16, 30

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,3

REFERENCES

N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).

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

LINKS

B. Alspach, On point-symmetric tournaments, Canad. Math. Bull., 13 (1970), 317-323. See t(n).

B. Alspach, On point-symmetric tournaments, Canad. Math. Bull., 13 (1970), 317-323. [Annotated copy] See t(n).

CROSSREFS

Cf. A002086, A049288 (note that A002086, A002087, A049288 are distinct sequences).

KEYWORD

nonn,more

AUTHOR

EXTENSIONS

Reference to Alspach (1970) corrected by Andrew Howroyd, Apr 28 2017

STATUS

approved