A173289 Partial sums of A000602.

1, 2, 3, 4, 6, 9, 14, 23, 41, 76, 151, 310, 665, 1467, 3325, 7672, 18031, 42925, 103448, 251732, 618051, 1528777, 3807435, 9539015, 24029260, 60826848, 154666260, 394882063, 1011987677, 2602494798, 6714341561, 17374649352, 45085903121

Offset: 0

Author

Jonathan Vos Post, Feb 15 2010

Keywords

• nonn

Crossrefs

Cf. A000602.

Formula

a(n) = Sum_{i=0..n} A000602(i).

Extensions

a(24) corrected by Georg Fischer, Aug 28 2020