OFFSET
1,1
COMMENTS
a(17) > 10^13. - Giovanni Resta, Jul 11 2013
REFERENCES
The first 4 terms were found by Labos Elemer, see A015915.
EXAMPLE
sigma(27)+8 = 48 = sigma(27+8), so 27 is in the sequence.
MATHEMATICA
ta={{0}}; Do[If[Equal[DivisorSigma[1, n+8] -DivisorSigma[1, n]-8, 0]&&!PrimeQ[n], Print[n]; ta=Append[ta, n]], {n, 1000000000, 1300000000}]; ta=Delete[ta, 1] (* Labos Elemer, Jan 10 2005 *)
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Jud McCranie, Jan 06 2001
EXTENSIONS
a(8)-a(10) terms from Labos Elemer, Jan 10 2005
Offset corrected and a(11) added by Donovan Johnson, Dec 07 2008
a(12)-a(16) from Giovanni Resta, Jul 11 2013
STATUS
approved