A173271 Partial sums of A000105.

1, 2, 3, 5, 10, 22, 57, 165, 534, 1819, 6474, 23547, 87147, 325738, 1227709, 4654285, 17733540, 67841449, 260463501, 1003087733, 3873759683, 14996820361, 58188678049, 226235685777, 881235386180, 3438462430944, 13437551253019

Offset

0,2

Links

John Mason, Table of n, a(n) for n = 0..50 (terms 0..48 from Jean-François Alcover).

Formula

a(n) = A130866(n) + 1. - John Mason, Feb 21 2023

Mathematica

Cases[Import["https://oeis.org/A000105/b000105.txt", "Table"], {_, _}][[All, 2]] // Accumulate (* Jean-François Alcover, Aug 17 2022 *)

Crossrefs

Cf. A000105, A130866.

Sequence in context: A014844 A307264 A329244 * A326574 A280019 A063253

Adjacent sequences: A173268 A173269 A173270 * A173272 A173273 A173274

Keyword

nonn

Author

Jonathan Vos Post, Feb 14 2010

Status

approved