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

A361243

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

Terms

    a(0) =1a(1) =1a(2) =1a(3) =2a(4) =5a(5) =17a(6) =79a(7) =421a(8) =2537a(9) =16214a(10) =108204a(11) =743953a(12) =5237414a(13) =37574426a(14) =273889801a(15) =2023645764a(16) =15128049989a(17) =114256903169a(18) =870786692493

External references