OFFSET
1,3
LINKS
Harvey P. Dale, Table of n, a(n) for n = 1..1000
MATHEMATICA
Table[(DivisorSigma[3, 2n-1]-DivisorSigma[1, 2n-1])/24, {n, 50}] (* Harvey P. Dale, Dec 15 2012 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Benoit Cloitre, Apr 11 2003
STATUS
approved