A046911 Number of isomorphism classes of irreducible quasiorders with n labeled points.

1, 1, 2, 4, 14, 62, 373, 2722

Offset: 0

Author

John A. Wright

Keywords

• nonn
• nice

References

• J. A. Wright, There are 718 6-point topologies, quasi-orderings and transgraphs, Notices Amer. Math. Soc., 17 (1970), p. 646, Abstract #70T-A106.

Links

• J. A. Wright, Letter to N. J. A. Sloane, Apr 06 1972, listing 18 sequences

Crossrefs

Cf. A046912.