Number of noncongruent diagonals in a regular n-gon.
0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13, 14
2 seqfan posts
Sat Sep 26 18:19:21 CEST 2009 [seqfan] Re: non-congruent diagonals in n-gon A165726