Number of noncrossing path sets on n nodes up to rotation with each path having at least two nodes.

A303844

Number of noncrossing path sets on n nodes up to rotation with each path having at least two nodes.

Terms

    a(0) =1a(1) =0a(2) =1a(3) =1a(4) =4a(5) =7a(6) =26a(7) =69a(8) =246a(9) =818a(10) =2976a(11) =10791a(12) =40591a(13) =153959a(14) =594753a(15) =2320696a(16) =9159498a(17) =36467012a(18) =146411208a(19) =592046830a(20) =2409946566a(21) =9867745442a(22) =40623068380a(23) =168058068487a(24) =698400767839

External references