Number of nonequivalent noncrossing cacti with n nodes up to rotation.

A361242

Number of nonequivalent noncrossing cacti with n nodes up to rotation.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =2a(4) =7a(5) =26a(6) =144a(7) =800a(8) =4995a(9) =32176a(10) =215914a(11) =1486270a(12) =10471534a(13) =75137664a(14) =547756650a(15) =4047212142a(16) =30255934851a(17) =228513227318

External references