OFFSET
0,1
FORMULA
a(n+1) = A001065(a(n)). - R. J. Mathar, Oct 11 2017
MATHEMATICA
NestList[If[#>0, DivisorSigma[1, #]-#, 0]&, 86, 100] (* Paolo Xausa, Oct 16 2023 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, Nov 30 2008
STATUS
approved