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A173282
Partial sums of A001190.
0
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
0,3
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
FORMULA
a(n) = Sum_{i=0..n} A001190(i).
CROSSREFS
Cf. A001190.
Sequence in context: A119262 A177510 A062178 * A178833 A212657 A065955
KEYWORD
nonn
AUTHOR
Jonathan Vos Post, Feb 14 2010
EXTENSIONS
a(25) corrected by Georg Fischer, Aug 28 2020
STATUS
approved