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A159002 a(n) is the smallest integer k such that the digits of n are at the n-th place in n^k (0 if there is no such k). 0
1, 5, 5, 5, 6, 7, 32, 10, 9, 0, 11, 81, 17, 64, 74, 347, 185, 187, 34, 65, 16, 112, 178, 29, 18, 91, 117, 142, 183, 61, 21, 259, 66, 114, 166, 27, 28, 67, 27, 65, 26, 120, 33, 37, 99, 177, 103, 60, 29, 71, 110, 69, 200, 132 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..54.

Jean-Marc Falcoz, a(n) is the smallest integer k such that the digits of n are at the n-th place in n^k (0 if there is no such k)

EXAMPLE

a(13) = 17, because 13^17 = 8650415919381337933, and starting at the 13th place, we have 13.

CROSSREFS

Sequence in context: A283076 A046263 A092279 * A127934 A205236 A266948

Adjacent sequences:  A158999 A159000 A159001 * A159003 A159004 A159005

KEYWORD

nonn,base

AUTHOR

Jean-Marc Falcoz, Apr 02 2009

STATUS

approved

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Last modified August 18 21:26 EDT 2022. Contains 356215 sequences. (Running on oeis4.)