A031436 Number of proper linear spaces of order n.
1, 1, 0, 0, 0, 0, 0, 1, 0, 1, 1, 1, 3, 7, 1, 119, 398, 161925, 2412890
Offset: 0
Links
- Anton Betten and Dieter Betten, The proper linear spaces on 17 points, Discrete Applied Mathematics, Volume 95, no. 1-3, 1999, pp. 83-108.
- Anton Betten and Dieter Betten, Note on the Proper Linear Spaces on 18 Points, in "Algebraic Combinatorics and Applications", Springer 2001, pp. 40-54.
- Anton Betten and Dieter Betten, Data up to 18 points, Proceedings of ALCOMA 1999, Springer Verlag 2000, 40-54 [free access].
- Hans-Dietrich O. F. Gronau, Ronald C. Mullin, Christian Pietsch, Pairwise Balanced Designs as Linear Spaces, pp. 228-235, table 4.19 [but beware errors], in: Charles J. Colbourn, Ed., CRC Handbook of Combinatorial Designs, CRC Press, Boca Raton 1996 [PDF preview]
Extensions
Additional comments from Michael Somos, Nov 18 2001