OFFSET
1,2
COMMENTS
LINKS
Harvey P. Dale, Table of n, a(n) for n = 1..1000
FORMULA
MATHEMATICA
Module[{fibs=Fibonacci[Range[20]]}, Select[Range[300], !PrimeQ[#]&&MemberQ[ fibs, DivisorSigma[0, #]]&]] (* Harvey P. Dale, Jan 20 2023 *)
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Omar E. Pol, May 09 2008
EXTENSIONS
More terms from R. J. Mathar, Oct 23 2009
STATUS
approved