OFFSET
0,3
EXAMPLE
a(1) = 1, because 1^7 = 1.
a(2) = 4, because 2^7 = 1024.
PROG
(PARI) a(n)=max(#digits(n^7), 1) \\ Charles R Greathouse IV, May 12 2014
CROSSREFS
KEYWORD
nonn,base,easy
AUTHOR
Michelle Tu, Apr 28 2014
STATUS
approved