Number of nonequivalent noncrossing triangular cacti with n triangles up to rotation.
A361237
Number of nonequivalent noncrossing triangular cacti with n triangles up to rotation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =5a(4) =33a(5) =230a(6) =1827a(7) =15466a(8) =137085a(9) =1260545a(10) =11930690a(11) =115607310a(12) =1142333751a(13) =11475243990a(14) =116910923720
External references
- oeis: A361237