OFFSET
1,2
COMMENTS
a(n) is also the total number of odd divisors of k less than sqrt(2*k), for k = 1..n.
Conjecture: a(n) is also the total number of subparts present (totally or partially) in an octant of the symmetric representations of sigma of all positive integers <= n.
CROSSREFS
KEYWORD
nonn
AUTHOR
Omar E. Pol, May 02 2017
STATUS
approved