A125023 Partial sums of A001372.

1, 2, 5, 12, 31, 78, 208, 551, 1502, 4117, 11435, 31926, 89829, 253727, 719926, 2048919, 5848543, 16732592, 47973762, 137788720, 396393362, 1141962118, 3294080424, 9512949813, 27501182865, 79579492065, 230478715333

Offset

0,2

Links

Table of n, a(n) for n=0..26.

Formula

a(n) = Sum_{i=0..n} A001372(i).

Crossrefs

Cf. A001372, A125024.

Sequence in context: A291239 A193284 A238829 * A129804 A317882 A335457

Adjacent sequences: A125020 A125021 A125022 * A125024 A125025 A125026

Keyword

easy,nonn

Author

Jonathan Vos Post, Nov 15 2006

Extensions

More terms from R. J. Mathar, Sep 23 2007

Status

approved