Number of asymmetric types of (4,n)-hypergraphs without isolated nodes, under action of symmetric group S_4; asymmetric n-covers of an unlabeled 4-set.

A055539

Number of asymmetric types of (4,n)-hypergraphs without isolated nodes, under action of symmetric group S_4; asymmetric n-covers of an unlabeled 4-set.

Terms

    a(0) =3a(1) =44a(2) =287a(3) =1315a(4) =4862a(5) =15511a(6) =44360a(7) =116431a(8) =284949a(9) =657696a(10) =1443853a(11) =3034549a(12) =6137552a(13) =11996470a(14) =22739586a(15) =41923060a(16) =75361026a(17) =132371521a(18) =227617365a(19) =383784757a(20) =635428859a(21) =1034423186a(22) =1657591966a(23) =2617279946a(24) =4075841668

External references