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A125304 a(n) is the smallest number such that its n power has all its digits twice. 0
11, 88, 11, 207, 2955 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

There may be no further terms.

LINKS

Table of n, a(n) for n=1..5.

EXAMPLE

11^1 = 11, 88^2 = 7744, 11^3 = 1331, 207^4 = 1836036801, 2955^5 = 225313610074846875

MATHEMATICA

g[n_] := Block[{k = 2}, While[ Union[ Length@ # & /@ Split@ Sort@ IntegerDigits[k^n]] != {2}, k++ ]; k]; Do[ Print@ g@ n, {n, 5}] (* Robert G. Wilson v, Aug 31 2007 *)

CROSSREFS

Sequence in context: A224182 A119383 A001278 * A192827 A022735 A173731

Adjacent sequences:  A125301 A125302 A125303 * A125305 A125306 A125307

KEYWORD

base,fini,nonn

AUTHOR

Tanya Khovanova, Dec 09 2006

STATUS

approved

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Last modified August 21 17:31 EDT 2017. Contains 290891 sequences.