OFFSET
1,1
COMMENTS
Also numbers n such that antisigma(n) < antisigma(n-2), where antisigma(n) = A024816(n) = the sum of the non-divisors of n that are between 1 and n.
Sequence contains anomalous increased frequency of values ending with digit 0.
Conjecture: there are no numbers n such that antisigma(n) < antisigma(n-3).
LINKS
Jaroslav Krizek, Table of n, a(n) for n = 1..228, all terms < 10^5
EXAMPLE
1680 is in sequence because antisigma(1680) = 1406088 < antisigma(1678) = 1406161.
CROSSREFS
KEYWORD
nonn
AUTHOR
Jaroslav Krizek, Nov 12 2013
STATUS
approved