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

Author

Jonathan Vos Post, Feb 14 2010

Keywords

• nonn

Links

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

Crossrefs

Cf. A000105, A130866.

Programs

Mathematica

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

Formula

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