Number of noncrossing partitions of an n-set up to rotation and reflection with all blocks having a prime number of elements.

A303875

Number of noncrossing partitions of an n-set up to rotation and reflection with all blocks having a prime number of elements.

Terms

    a(0) =1a(1) =0a(2) =1a(3) =1a(4) =1a(5) =2a(6) =3a(7) =5a(8) =7a(9) =14a(10) =26a(11) =49a(12) =107a(13) =215a(14) =502a(15) =1112a(16) =2619a(17) =6220a(18) =14807a(19) =36396a(20) =88397a(21) =219920a(22) =545196a(23) =1364669a(24) =3434436a(25) =8658463a(26) =21989434a(27) =55893852a(28) =142823174a(29) =365766327

External references