

A007150


2part of number of tournaments on n nodes.
(Formerly M0269)


0



0, 0, 1, 2, 2, 3, 3, 5, 4, 6, 5, 7, 6, 7, 7, 10, 8, 9, 9, 12, 10, 11, 11, 14, 12, 14, 13, 15, 14, 17, 15, 19, 16, 20, 17, 19, 18, 19, 19, 26, 20, 22, 21, 23, 22, 23, 23, 30, 24, 26, 25, 28, 26
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OFFSET

1,4


REFERENCES

Steven C. Cater and Robert W. Robinson, ``Exponents of 2 in the numbers of unlabeled graphs and tournaments,'' Congressus Numerantium, 82 (1991), pp. 139155.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).


LINKS

Table of n, a(n) for n=1..53.
Steven C. Cater and Robert W. Robinson, Exponents of 2 in the numbers of unlabeled graphs and tournaments, Preprint. (Annotated scanned copy)
Index entries for sequences related to tournaments


CROSSREFS

Power of 2 dividing A000568(n).
Sequence in context: A113605 A307815 A070230 * A213634 A300271 A252461
Adjacent sequences: A007147 A007148 A007149 * A007151 A007152 A007153


KEYWORD

nonn


AUTHOR

N. J. A. Sloane.


STATUS

approved



