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 A111646 #7 Jun 22 2019 14:48:50 %S A111646 2,1,6,6,5,6,6,4,6,2,6,28,2,6,1,6,60,6,28,6,6,6,28,39,6,6,90,6,28,6,6, %T A111646 28,6,4,6,6,6,1,6,28,6,28,6,6,6,6,6,28,1,6,336,6,6,6,28,6,6,4,28,6,6, %U A111646 6,15,6,16,6,28,6,6,6,6,28,6,6,6,28,6,28,6,6,28,6,6,6,6,28,496,8,6,6,6,6 %N A111646 Subtracted divisor in admirable numbers. %H A111646 Amiram Eldar, <a href="/A111646/b111646.txt">Table of n, a(n) for n = 1..10000</a> %F A111646 a(n) = A033880(A111592(n))/2 = A111667(n)/2. - _Amiram Eldar_, Jun 22 2019 %e A111646 a(1)=2 because 12 = 1+3+4+6-2, the 2 is subtracted. a(6)=6 because 42 = 1+2+3+7+14+21-6, the 6 is subtracted. %Y A111646 Cf. A033880, A111592, A111667. %K A111646 easy,nonn %O A111646 1,1 %A A111646 _Jason Earls_, Aug 10 2005