login
A176708
Partial sums of A094820.
0
1, 3, 6, 11, 17, 25, 34, 45, 58, 73, 89, 108, 128, 150, 174, 201, 229, 260, 292, 327, 364, 403, 443, 487, 533, 581, 631, 684, 738, 796, 855, 917, 981, 1047, 1115, 1188, 1262, 1338, 1416, 1498, 1581, 1668, 1756, 1847, 1941, 2037, 2134, 2236, 2340, 2447, 2556
OFFSET
1,2
PROG
(PARI) f(n) = sum(k=1, n, ceil(numdiv(k)/2)); \\ A094820
a(n) = sum(k=1, n, f(k)); \\ Michel Marcus, Sep 29 2021
CROSSREFS
Sequence in context: A025743 A022338 A263807 * A273140 A320272 A119639
KEYWORD
easy,nonn
AUTHOR
Jonathan Vos Post, Apr 24 2010
EXTENSIONS
a(2) corrected by Georg Fischer, Sep 29 2021
STATUS
approved