%I #12 Jan 20 2022 18:16:41
%S 25,26,35,36,125,126,135,136,215,216,315,316,1125,1126,1135,1136,1215,
%T 1216,1315,1316
%N Starting values for which iteration of the map x->A175420(x) never reaches a single-digit value.
%C Arguments m such that A175424(m) = -1. Complement of A175427.
%e 26 is in the sequence because starting with 26 the iterations enter a cycle of 2- and 3-digit numbers: 6^2 = 36, 6^3 = 216, (6^1)^2 = 36, 6^3 = 216, (6^1)^2 = 36, ...
%Y Cf. A175419, A175420, A175421, A175422, A175423, A175424, A175425, A175427.
%K nonn,base,more
%O 1,1
%A _Jaroslav Krizek_, May 09 2010