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A242374 Number of digits in the decimal expansion of n^8. 0

%I #11 May 12 2014 22:08:32

%S 1,1,3,4,5,6,7,7,8,8,9,9,9,9,10,10,10,10,11,11,11,11,11,11,12,12,12,

%T 12,12,12,12,12,13,13,13,13,13,13,13,13,13,13,13,14,14,14,14,14,14,14,

%U 14,14,14,14,14,14,14,15,15,15,15,15,15,15,15,15,15,15

%N Number of digits in the decimal expansion of n^8.

%F a(n) = A055642(n^8) = A055642(A001016(n)).

%e For n=1, a(1)=1 because 1^8=1, 1 digit.

%e For n=9, a(9)=8 because 9^8=43046721, 8 digits.

%o (PARI) a(n) = #Str(n^8); \\ _Michel Marcus_, May 12 2014

%K nonn,base,easy

%O 0,3

%A _Michelle Tu_, May 12 2014

%E More terms from _Michel Marcus_, May 12 2014

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Last modified April 19 15:11 EDT 2024. Contains 371794 sequences. (Running on oeis4.)