OFFSET
1,2
FORMULA
Partial sums of A015723.
G.f.: (1/(1 - x)) * Sum_{i>=1} x^i/(1 + x^i) * Product_{j>=1} (1 + x^j). - Ilya Gutkovskiy, Apr 04 2017
CROSSREFS
KEYWORD
nonn
AUTHOR
EXTENSIONS
Corrected by Vladeta Jovovic, Dec 03 2004
STATUS
approved