A173282 Partial sums of A001190.

0, 1, 2, 3, 5, 8, 14, 25, 48, 94, 192, 399, 850, 1833, 4012, 8862, 19767, 44398, 100409, 228321, 521868, 1198025, 2761397, 6387546, 14823925, 34504202, 80530820, 188421429, 441872140, 1038444527, 2445263286, 5768499524, 13631457915, 32263783234, 76478352334

Offset: 0

Author

Jonathan Vos Post, Feb 14 2010

Keywords

• nonn

Comments

The largest rank for some unlabeled binary rooted tree with n leaves (n>0) in a simple bijection between unlabeled binary rooted trees and positive integers. -Noah A Rosenberg, Jun 14 2022

Links

• N. A. Rosenberg, On the Colijn-Plazzotta numbering scheme for unlabeled binary rooted trees, Discr. Appl. Math. 291 (2021), 88-98.

Crossrefs

Cf. A001190.

Formula

a(n) = Sum_{i=0..n} A001190(i).

Extensions

a(25) corrected by Georg Fischer, Aug 28 2020