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Numbers of points in nontrivial partial geometries.
0

%I #6 Oct 24 2023 06:19:30

%S 15,27,40,45,64

%N Numbers of points in nontrivial partial geometries.

%D CRC Handbook of Combinatorial Designs, 1996, p. 418.

%K nonn,hard

%O 1,1

%A _N. J. A. Sloane_