Table of n, a(n) for n=1..6.
Scott R. Shannon, Pentagram regions for n = 1.
Scott R. Shannon, Pentagram regions for n = 2.
Scott R. Shannon, Pentagram regions for n = 3.
Scott R. Shannon, Pentagram regions for n = 4.
Scott R. Shannon, Pentagram regions for n = 5.
Scott R. Shannon, Pentagram regions for n = 6.
Scott R. Shannon, Pentagram regions with random distancebased coloring for n = 1.
Scott R. Shannon, Pentagram regions with random distancebased coloring for n = 2.
Scott R. Shannon, Pentagram regions with random distancebased coloring for n = 3.
Scott R. Shannon, Pentagram regions with random distancebased coloring for n = 4.
Scott R. Shannon, Pentagram regions with random distancebased coloring for n = 5.
Eric Weisstein's World of Mathematics, Pentagram.
