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A231364
Numbers n such that antisigma(n) = antisigma(k) has solution for distinct numbers n and k.
0
1, 2, 5, 6, 8585, 8586, 16119, 16020, 29886159, 29886160
OFFSET
1,2
COMMENTS
Antisigma(n) = A024816(n) = the sum of the non-divisors of n that are between 1 and n. a(9) > 10^5. Conjecture: a(9) = 29886159, a(10) = 29886160.
EXAMPLE
5 and 6 are in the sequence because antisigma(5) = antisigma(6) = 9.
CROSSREFS
Cf. A067816 (numbers n such that antisigma(n) = antisigma(n+1)).
Cf. A206036 (numbers n such that sigma(n) = sigma(k) has solution for distinct numbers n and k).
Cf. A225775 (numbers k such that antisigma(x) = antisigma(x+1) = k has solution).
Sequence in context: A244434 A176007 A009376 * A025123 A071791 A248752
KEYWORD
nonn
AUTHOR
Jaroslav Krizek, Nov 10 2013
EXTENSIONS
a(9)-a(10) from Donovan Johnson, Nov 12 2013
STATUS
approved