Number of unrooted binary ordered tanglegrams of size n.
A259115
Number of unrooted binary ordered tanglegrams of size n.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =2a(4) =4a(5) =31a(6) =243a(7) =3532a(8) =62810a(9) =1390718a(10) =36080361a(11) =1076477512a(12) =36281518847
External references
- oeis: A259115