Number of asymmetric mobiles (circular rooted trees) with n nodes and 5 leaves.

Terms

a(0) =1a(1) =7a(2) =31a(3) =109a(4) =321a(5) =833a(6) =1951a(7) =4212a(8) =8498a(9) =16205a(10) =29449a(11) =51349a(12) =86363a(13) =140731a(14) =222986a(15) =344607a(16) =520758a(17) =771208a(18) =1121360a(19) =1603501a(20) =2258188a(21) =3135900a(22) =4298854a(23) =5823139a(24) =7801042a(25) =10343750a(26) =13584274a(27) =17680810a(28) =22820358a(29) =29222841