|
|
A064629
|
|
a(n) = 4^n mod 3^n.
|
|
11
|
|
|
0, 1, 7, 10, 13, 52, 451, 1075, 6487, 6265, 44743, 119923, 302545, 147298, 589192, 11922706, 33341917, 4227505, 146050183, 584200732, 1174541461, 4698165844, 18792663376, 43789593895, 175158375580, 700633502320, 1955245399837, 2737249942690, 18574597255747
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
0,3
|
|
COMMENTS
|
(a(n+1) - 4*a(n))/3^n is always one of -3, -2, -1, 0, 1, 2. - Robert Israel, Dec 01 2016
|
|
LINKS
|
|
|
MAPLE
|
|
|
MATHEMATICA
|
Table[PowerMod[4, n, 3^n], {n, 0, 30}] (* Harvey P. Dale, Aug 26 2012 *)
|
|
PROG
|
(PARI) { f=t=1; for (n=0, 200, write("b064629.txt", n, " ", f%t); f*=4; t*=3 ) } \\ Harry J. Smith, Sep 20 2009
(Sage) [power_mod(4, n, 3^n)for n in range(0, 27)] # Zerinvary Lajos, Nov 28 2009
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn,easy
|
|
AUTHOR
|
|
|
EXTENSIONS
|
|
|
STATUS
|
approved
|
|
|
|