OFFSET
1,1
COMMENTS
LINKS
Jaroslav Krizek, Table of n, a(n) for n = 1..2000
EXAMPLE
Number 59 is in the sequence because sigma(60) - sigma(58) = 168 - 90 = 78 > sigma(59) = 60.
MATHEMATICA
Flatten[Position[Partition[DivisorSigma[1, Range[1200]], 3, 1], _?(Last[#]- First[#]> #[[2]]&), {1}, Heads->False]]+1 (* Harvey P. Dale, Mar 31 2014 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Jaroslav Krizek, Aug 08 2013
STATUS
approved