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%I #20 Apr 15 2021 22:53:39
%S 1,10,15,22,26,33,34,46,51,58,65,69,70,82,86,87,94,105,106,118,122,
%T 123,130,134,141,142,146,154,159,166,177,178,190,195,202,206,213,214,
%U 215,218,226,231,238,249,250,254,262,266,267,274,285,286,298,302,303,310
%N Positive integers m such that A126287^k(m) = m for some positive integer k.
%C A126287^k(m) means apply A126287 to m k times.
%C Equivalently, the numbers that belong to a cycle under the map x -> A126287(x).
%C For any term m in this sequence, A126287(A126287(m)) = m.
%C Supersequence of A017641. Moreover, this sequence (excluding the first term) can be represented as an infinite union of arithmetic progressions.
%C There are no primes in this sequence.
%H Ely Golden, <a href="/A337610/b337610.txt">Table of n, a(n) for n = 1..10000</a>
%H Ely Golden, <a href="/A337610/a337610.py.txt">Python program for generating terms of this sequence</a>
%e 10 is a term since A126287(A126287(10)) = A126287(15) = 10.
%Y Cf. A017641, A126287, A337609, A337611, A337612.
%K nonn,easy
%O 1,2
%A _Ely Golden_, Oct 07 2020
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