OFFSET
0,2
COMMENTS
This is the 10's complement of A225446.
LINKS
Seiichi Manyama, Table of n, a(n) for n = 0..10000
EXAMPLE
1^7 == -9 (mod 10).
71^7 == -9 (mod 10^2).
871^7 == -9 (mod 10^3).
2871^7 == -9 (mod 10^4).
52871^7 == -9 (mod 10^5).
52871^7 == -9 (mod 10^6).
PROG
(PARI) n=0; for(i=1, 100, m=(10^i-9); for(x=0, 9, if(((n+(x*10^(i-1)))^7)%(10^i)==m, n=n+(x*10^(i-1)); print1(x", "); break)))
(PARI) Vecrev(digits(truncate((-9+O(10^100))^(1/7)))) \\ Seiichi Manyama, Aug 04 2019
(PARI) N=100; Vecrev(digits(lift(chinese(Mod((-9+O(2^N))^(1/7), 2^N), Mod((-9+O(5^N))^(1/7), 5^N)))), N) \\ Seiichi Manyama, Aug 04 2019
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Aswini Vaidyanathan, May 11 2013
STATUS
approved