login
A cycle of length 6 when iterating x <- phi(sigma(x)).
3

%I #16 Aug 08 2024 14:44:47

%S 27648,30976,54432,48384,55296,34560

%N A cycle of length 6 when iterating x <- phi(sigma(x)).

%C The first term in the sequence is the smallest member of the cycle. This is the 6-cycle with the second-smallest members. Similar cycles are in the crossreferences.

%e phi(sigma(27648)) = 30976, ... phi(sigma(34560)) = 27648, so 27648 is in the sequence.

%Y Cf. A095955, A095956, A001229, A373435, A373453, A373454, A375012, A375013.

%K nonn,fini,full

%O 1,1

%A _Jud McCranie_, Jul 27 2024