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A006246 Number of primitive sorting networks on n elements.
(Formerly M0920)
+0
4
1, 1, 1, 2, 3, 20, 242, 6405, 316835 (list; graph; listen)
OFFSET

1,4

REFERENCES

M. H. Klin et al., "2D-configurations and clique-cyclic orientations of the graphs L(K_p)", pages 149-162 of Reports in Molecular Theory, Vol. 1, 1990.

D. E. Knuth, ``Axioms and hulls,'' Lect. Notes Comp. Sci., Vol. 606.

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

LINKS

Index entries for sequences related to sorting

CROSSREFS

Cf. A006245.

Sequence in context: A009721 A013340 A012416 this_sequence A110372 A132421 A132500

Adjacent sequences: A006243 A006244 A006245 this_sequence A006247 A006248 A006249

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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