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%I #10 Jul 07 2023 14:48:10
%S 1,3,4,10,11,21,20,36,36,55,56,78,79,103,103,136,135
%N Number of distinct distances between the intersection points in A091908 measured from the center of the equilateral triangle.
%H Hugo Pfoertner, <a href="http://www.randomwalk.de/sequences/a091908.pdf">Visualization of diagonal intersections in an equilateral triangle.</a>
%H Hugo Pfoertner, <a href="http://www.randomwalk.de/sequences/a091908.zip">Diagonal intersections in an equilateral triangle.</a> Program and results.
%e a(2)=1: The 3 line segments intersect each other at the triangle center (r=0).
%e a(3)=3: There are 3 intersection points at r=0.2, 3 at r=0.25 and 6 at r=0.3779645, i.e. 3 different radii. See pictures given at link.
%o FORTRAN program given at link.
%Y Cf. A091908, A092098.
%K more,nonn
%O 2,2
%A _Hugo Pfoertner_, Feb 19 2004
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