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A175426
Starting values for which iteration of the map x->A175420(x) never reaches a single-digit value.
7
25, 26, 35, 36, 125, 126, 135, 136, 215, 216, 315, 316, 1125, 1126, 1135, 1136, 1215, 1216, 1315, 1316
OFFSET
1,1
COMMENTS
Arguments m such that A175424(m) = -1. Complement of A175427.
EXAMPLE
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, ...
KEYWORD
nonn,base,more
AUTHOR
Jaroslav Krizek, May 09 2010
STATUS
approved