Number of self-avoiding paths with nodes chosen among n given points on a circle; one-node paths are allowed.

A360715

Number of self-avoiding paths with nodes chosen among n given points on a circle; one-node paths are allowed.

Terms

    a(0) =1a(1) =3a(2) =9a(3) =30a(4) =105a(5) =369a(6) =1281a(7) =4380a(8) =14769a(9) =49215a(10) =162393a(11) =531450a(12) =1727193a(13) =5580141a(14) =17936145a(15) =57395640a(16) =182948577a(17) =581130747a(18) =1840247337a(19) =5811307350a(20) =18305618121a(21) =57531942633a(22) =180441092769a(23) =564859072980

External references