Number of increasing mobiles (circular rooted trees) with n nodes and 3 leaves.

A055357

Number of increasing mobiles (circular rooted trees) with n nodes and 3 leaves.

Terms

    a(0) =2a(1) =18a(2) =98a(3) =424a(4) =1614a(5) =5682a(6) =19022a(7) =61584a(8) =194882a(9) =607042a(10) =1870122a(11) =5716680a(12) =17379206a(13) =52628898a(14) =158934998a(15) =479032912a(16) =1441816986a(17) =4335412050a(18) =13027207250a(19) =39125661480a(20) =117469258622a(21) =352600713298

External references