%I M0292 #20 Sep 06 2023 22:43:43
%S 1,1,1,2,2,3,5,11,32,163,1680
%N Number of linear geometries on n points with <= 3 points per line.
%D N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
%H D. G. Glynn, <a href="https://doi.org/10.1016/0097-3165(88)90027-1">Rings of geometries II</a>, J. Combin. Theory, A 49 (1988), 26-66.
%K nonn,hard,nice
%O 0,4
%A _N. J. A. Sloane_, _Simon Plouffe_