A076861 Number of geometries for group S_n under axioms A, 2T_1, CD.

1, 4, 9, 21, 52

Offset

3,2

References

F. Buekenhout, P. Cara, M. Dehon and D. Leemans, Residually weakly primitive geometries of small sporadic and almost simple groups: a synthesis. Topics in diagram geometry, 1-27, Quad. Mat., 12, Dept. Math., Seconda Univ. Napoli, Caserta, 2003.

Links

Table of n, a(n) for n=3..7.

Crossrefs

Cf. A076851-A076862.

Sequence in context: A243639 A243640 A243634 * A374943 A048391 A343322

Adjacent sequences: A076858 A076859 A076860 * A076862 A076863 A076864

Keyword

nonn,more

Author

N. J. A. Sloane, Nov 23 2002

Status

approved