OFFSET
0,3
FORMULA
a(n) = A055642(n^4).
EXAMPLE
For n=1, a(1)=1 because 1^4=1.
For n=5, a(5)=3 because 5^4=625.
MATHEMATICA
Join[{1}, IntegerLength[Range[90]^4]] (* Harvey P. Dale, Sep 06 2015 *)
CROSSREFS
KEYWORD
nonn,base,easy
AUTHOR
Lorianne Kwak, Mar 24 2014
STATUS
approved