A110887 Number of configurations of n skew lines up to isotopy.

1, 1, 2, 3, 7, 19, 74

Offset: 1

Author

David Garber, Sep 20 2005

Keywords

• hard
• more
• nonn

References

• A. Borobia and V. F. Mazurovskii, On diagrams of configurations of 7 skew lines in R^3, Amer. Math. Soc. Transl. (2) 173 (1996), 33-40
• A. Borobia and V. F. Mazurovskii, Nonsingular configurations of 7 lines in RP^3, J. Knot Theory Ramif. 6(6) (1997), 751-783
• O. Y. Viro and Y. V. Drobotukhina, Configurations of skew lines, Leningrad Math. J. 1(4) (1990), 1027-1050