OFFSET
0,1
COMMENTS
This is the 10's complement of A225443.
LINKS
Seiichi Manyama, Table of n, a(n) for n = 0..10000
EXAMPLE
9^7 == -1 (mod 10).
69^7 == -11 (mod 10^2).
969^7 == -111 (mod 10^3).
8969^7 == -1111 (mod 10^4).
8969^7 == -11111 (mod 10^5).
808969^7 == -111111 (mod 10^6).
PROG
(PARI) n=0; for(i=1, 100, m=(8*(10^i-1)/9)+1; 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(-(-1/9+O(10^100))^(1/7)))) \\ Seiichi Manyama, Aug 04 2019
(PARI) N=100; Vecrev(digits(lift(chinese(Mod((1/9+O(2^N))^(1/7), 2^N), Mod((1/9+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