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A098174 Smallest e>0 such that the initial digit of n^e = 1 in decimal representation. 2
1, 4, 9, 2, 3, 4, 5, 8, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 4, 4, 3, 3, 3, 3, 3, 3, 5, 7, 9, 25, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 5, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 7, 7, 7, 8, 8, 9, 9, 10, 10, 11, 12, 13, 14, 16, 18, 20, 23, 27, 32, 40, 53 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

A000030(n^a(n)) = 1; A098175(n) = n^a(n).

LINKS

Table of n, a(n) for n=1..97.

CROSSREFS

Sequence in context: A238592 A229553 A254061 * A126709 A254159 A125575

Adjacent sequences:  A098171 A098172 A098173 * A098175 A098176 A098177

KEYWORD

nonn,base

AUTHOR

Reinhard Zumkeller, Aug 30 2004

STATUS

approved

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Last modified February 23 04:57 EST 2018. Contains 299473 sequences. (Running on oeis4.)