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 A375013 #16 Aug 08 2024 01:45:45 %S A375013 1800,2880,3024,3840,3456,2560 %N A375013 A cycle of length 6 when iterating x <- phi(sigma(x)). %C A375013 The first term in the sequence is the smallest member of the cycle. This is the 6-cycle with the smallest members. Similar cycles are in the crossreferences. %e A375013 phi(sigma(1800)) = 2880, ... phi(sigma(2560)) = 1800, so 1800 is in the sequence. %Y A375013 Cf. A095955, A095956, A001229, A373435, A373453, A373454, A375012, A375014. %K A375013 nonn,fini,full %O A375013 1,1 %A A375013 _Jud McCranie_, Jul 27 2024