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A125304 a(n) is the smallest number whose n-th 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
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 * A334249 A192827 A022735
KEYWORD
base,fini,nonn
AUTHOR
Tanya Khovanova, Dec 09 2006
STATUS
approved

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Last modified June 19 07:34 EDT 2024. Contains 373492 sequences. (Running on oeis4.)