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A225446 10-adic integer x such that x^7 == 9 mod 10^n for all n. 1
9, 2, 1, 7, 4, 9, 7, 9, 3, 5, 3, 7, 1, 0, 8, 5, 2, 9, 1, 0, 5, 5, 6, 4, 6, 0, 5, 0, 3, 6, 4, 7, 4, 2, 7, 6, 0, 5, 0, 5, 1, 1, 8, 9, 9, 5, 1, 5, 8, 5, 1, 4, 5, 0, 0, 7, 7, 2, 8, 0, 7, 7, 7, 4, 8, 3, 6, 2, 7, 7, 9, 9, 1, 0, 4, 7, 0, 9, 0, 3, 0, 5, 1, 1, 1, 7, 5, 6, 3, 3, 2, 0, 1, 1, 7, 9, 5, 6, 0, 9 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..100.

EXAMPLE

9^7 == 9 (mod 10).

29^7 == 9 (mod 100).

129^7 == 9 (mod 1000).

7129^7 == 9 (mod 10000).

47129^7 == 9 (mod 100000).

947129^7 == 9 (mod 1000000).

PROG

(PARI) n=0; for(i=1, 100, m=9; for(x=0, 9, if(((n+(x*10^(i-1)))^7)%(10^i)==m, n=n+(x*10^(i-1)); print1(x", "); break)))

CROSSREFS

Sequence in context: A118322 A199507 A230156 * A277559 A154993 A197488

Adjacent sequences:  A225443 A225444 A225445 * A225447 A225448 A225449

KEYWORD

nonn,base

AUTHOR

Aswini Vaidyanathan, May 11 2013

STATUS

approved

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Last modified April 19 18:37 EDT 2019. Contains 322290 sequences. (Running on oeis4.)