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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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Arguments m such that A175424(m) = -1. Complement of A175427.

LINKS

Table of n, a(n) for n=1..20.

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, ...

CROSSREFS

Cf. A175419 - A175427.

Sequence in context: A067810 A111168 A195331 * A045567 A141278 A022395

Adjacent sequences:  A175423 A175424 A175425 * A175427 A175428 A175429

KEYWORD

nonn,base

AUTHOR

Jaroslav Krizek, May 09 2010

STATUS

approved

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Last modified June 25 14:30 EDT 2019. Contains 324352 sequences. (Running on oeis4.)