Number of torsion pairs in the cluster category of type A_n.
A181517
Number of torsion pairs in the cluster category of type A_n.
Terms
- a(0) =1a(1) =4a(2) =17a(3) =82a(4) =422a(5) =2274a(6) =12665a(7) =72326a(8) =421214a(9) =2492112a(10) =14937210a(11) =90508256a(12) =553492552a(13) =3411758334a(14) =21175624713a(15) =132226234854a(16) =830077057878
External references
- oeis: A181517