A091910 Number of distinct distances between the intersection points in A091908 measured from the center of the equilateral triangle.

1, 3, 4, 10, 11, 21, 20, 36, 36, 55, 56, 78, 79, 103, 103, 136, 135

Offset: 2

Author

Hugo Pfoertner, Feb 19 2004

Keywords

• more
• nonn

Examples

			a(2)=1: The 3 line segments intersect each other at the triangle center (r=0).
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.
		

Links

• Hugo Pfoertner, Visualization of diagonal intersections in an equilateral triangle.
• Hugo Pfoertner, Diagonal intersections in an equilateral triangle. Program and results.

Crossrefs

Cf. A091908, A092098.

Programs

Fortran

! Program given at link.