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Partial sums of A000105.
2

%I #18 Apr 15 2023 14:35:03

%S 1,2,3,5,10,22,57,165,534,1819,6474,23547,87147,325738,1227709,

%T 4654285,17733540,67841449,260463501,1003087733,3873759683,

%U 14996820361,58188678049,226235685777,881235386180,3438462430944,13437551253019

%N Partial sums of A000105.

%H John Mason, <a href="/A173271/b173271.txt">Table of n, a(n) for n = 0..50</a> (terms 0..48 from Jean-François Alcover).

%F a(n) = A130866(n) + 1. - _John Mason_, Feb 21 2023

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

%Y Cf. A000105, A130866.

%K nonn

%O 0,2

%A _Jonathan Vos Post_, Feb 14 2010