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A046910
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Number of connected irreducible quasiorders with n labeled points.
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1
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OFFSET
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0,5
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REFERENCES
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J. A. Wright, There are 718 6-point topologies, quasi-orderings and transgraphs, Notices Amer. Math. Soc., 17 (1970), p. 646, Abstract #70T-A106.
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LINKS
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Table of n, a(n) for n=0..7.
J. A. Wright, Letter to N. J. A. Sloane, Apr 06 1972, listing 18 sequences
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CROSSREFS
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Cf. A046909.
Sequence in context: A042203 A042200 A104593 * A278851 A243943 A192107
Adjacent sequences: A046907 A046908 A046909 * A046911 A046912 A046913
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KEYWORD
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nonn
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AUTHOR
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John A. Wright.
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STATUS
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approved
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