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 A274549 #13 Jul 17 2021 23:39:18 %S A274549 1,6,15,18,19,20,22,24,28,34,36,42,48,52,54,76,78,84,90,98,140,171, %T A274549 260,308,336,496,8128,33550336,8589869056 %N A274549 Numbers found in the cycles of the iterated sum of deficient divisors function. %C A274549 The 1-cycles (or fixed points) greater than 1 are given in A125310, the 3-cycle terms are given in A274339, the 4-cycle terms are given in A274340 and A274380, and the 10-cycle terms are given in A274338. This sequence was suggested to me by _Michel Marcus_ when I was submitting the 3-cycle, 4-cycle, and 10-cycle sequences. %Y A274549 Cf. A125310, A187793, A274338, A274339, A274340, A274380. %K A274549 nonn,more %O A274549 1,2 %A A274549 _Timothy L. Tiffin_, Jun 27 2016