This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A231364 #9 Nov 12 2013 03:11:32 %S A231364 1,2,5,6,8585,8586,16119,16020,29886159,29886160 %N A231364 Numbers n such that antisigma(n) = antisigma(k) has solution for distinct numbers n and k. %C A231364 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. %e A231364 5 and 6 are in the sequence because antisigma(5) = antisigma(6) = 9. %Y A231364 Cf. A067816 (numbers n such that antisigma(n) = antisigma(n+1)). %Y A231364 Cf. A206036 (numbers n such that sigma(n) = sigma(k) has solution for distinct numbers n and k). %Y A231364 Cf. A225775 (numbers k such that antisigma(x) = antisigma(x+1) = k has solution). %Y A231364 Cf. A231365, A231366, A231367, A231368, A231369. %K A231364 nonn %O A231364 1,2 %A A231364 _Jaroslav Krizek_, Nov 10 2013 %E A231364 a(9)-a(10) from _Donovan Johnson_, Nov 12 2013