OFFSET
0,4
LINKS
Amiram Eldar, Table of n, a(n) for n = 0..104 (terms 1..70 from Vincenzo Librandi)
MATHEMATICA
a[n_]:=Select[Divisors[BellB[n]], OddQ]//Total; Table[a[n], {n, 0, 40}]
CROSSREFS
KEYWORD
nonn
AUTHOR
Vincenzo Librandi, Jan 07 2017
EXTENSIONS
Offset 0 and a(0) added by Amiram Eldar, Nov 23 2019
STATUS
approved