OFFSET
1,2
LINKS
T. D. Noe, Table of n, a(n) for n = 1..1000
N. J. A. Sloane, Transforms
FORMULA
a(n) = Sum_{d|n} A008578(d). [From Jaroslav Krizek, Aug 05 2009]
CROSSREFS
KEYWORD
nonn
AUTHOR
STATUS
approved