OFFSET
1,2
LINKS
Amiram Eldar, Table of n, a(n) for n = 1..10000
MATHEMATICA
DivisorSigma[7, Range[1, 45, 2]] (* Amiram Eldar, Aug 17 2019 *)
PROG
(PARI) a(n) = sigma(2*n-1, 7); \\ Michel Marcus, Dec 04 2013
CROSSREFS
KEYWORD
nonn
AUTHOR
Benoit Cloitre, Apr 12 2003
EXTENSIONS
Three more terms from Michel Marcus, Dec 04 2013
STATUS
approved