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 A283593 #7 Mar 11 2017 21:20:38
%S A283593 1,2,3,5,7,6,7,7,8,9,10,8,12,11,13,15,14,15,16,20,17,20,22,25,25,25,
%T A283593 24,24,29,28,29,31,38,36,38,38,43,41,41,46,45,47,45,48,47,47,45,47,48,
%U A283593 48,46,49,53,51,57,58,65,55,58,65,59,57,63,60,60,63,67,68
%N A283593 Least m > 0 such that A283565(n) = Sum_{k=1..m} (A283565(n) mod k).
%H A283593 Rémy Sigrist, <a href="/A283593/b283593.txt">Table of n, a(n) for n = 1..10000</a>
%e A283593 A283565(4)=7 and (7 mod 1) + (7 mod 2) + (7 mod 3) + (7 mod 4) + (7 mod 5) = 0 + 1 + 1 + 3 + 2 = 7, hence a(4)=5.
%Y A283593 Cf. A283565.
%K A283593 nonn
%O A283593 1,2
%A A283593 _Rémy Sigrist_, Mar 11 2017