0,3

Table of n, a(n) for n=0..86.

a(n) = A055642(n^4).

For n=1, a(1)=1 because 1^4=1.

For n=5, a(5)=3 because 5^4=625.

Join[{1}, IntegerLength[Range[90]^4]] (* Harvey P. Dale, Sep 06 2015 *)

Sequence in context: A262558 A156876 A137397 * A062571 A277903 A102515

Adjacent sequences: A239681 A239682 A239683 * A239685 A239686 A239687

nonn,base,easy

Lorianne Kwak, Mar 24 2014

approved