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A225775 Numbers k such that antisigma(x) = antisigma(x+1) = k has solution. 2

%I

%S 0,9,36844389,129894940,446591224981504

%N Numbers k such that antisigma(x) = antisigma(x+1) = k has solution.

%C Antisigma(n) = A024816(n) = the sum of the nondivisors of n that are between 1 and n.

%C Conjecture: also numbers k such that antisigma(n) = antisigma(m) = k has solution for distinct numbers n and m. - _Jaroslav Krizek_, Nov 10 2013

%e 36844389 is in the sequence because 36844389 = antisigma(8585) = antisigma(8586).

%Y Cf. A067816 (numbers n such that antisigma(n) = antisigma(n+1)).

%K nonn

%O 1,2

%A _Jaroslav Krizek_, Jul 26 2013

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Last modified September 19 22:06 EDT 2021. Contains 347576 sequences. (Running on oeis4.)