Smallest value of the Colijn-Plazzotta rank among n-leaved unlabeled binary rooted trees.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =6a(5) =7a(6) =10a(7) =11a(8) =20a(9) =22a(10) =28a(11) =29a(12) =53a(13) =56a(14) =66a(15) =67a(16) =202a(17) =211a(18) =252a(19) =254a(20) =401a(21) =407a(22) =435a(23) =436a(24) =1408a(25) =1432a(26) =1594a(27) =1597a(28) =2202a(29) =2212