Number of achiral unicursal star polygons (no edge joins adjacent vertices) that can be formed by connecting the vertices of a regular n-gon.
A370769
Number of achiral unicursal star polygons (no edge joins adjacent vertices) that can be formed by connecting the vertices of a regular n-gon.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =0a(4) =1a(5) =1a(6) =5a(7) =11a(8) =49a(9) =123a(10) =521a(11) =1583a(12) =6581a(13) =23239a(14) =95509a(15) =384771a(16) =1570265a(17) =7106995a(18) =28869825a(19) =145034327a(20) =587270877a(21) =3242792607a(22) =13100475021a(23) =78866628011a(24) =318067071169
External references
- oeis: A370769