Michelle Tu - cp's OEIS frontend

User: Michelle Tu

Michelle Tu has authored 2 sequences.

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

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, 12, 12, 12, 12, 12, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15

Offset: 0

Michelle Tu, May 12 2014

			For n=1, a(1)=1 because 1^8=1, 1 digit.
For n=9, a(9)=8 because 9^8=43046721, 8 digits.

a(n) = #Str(n^8); \\ Michel Marcus, May 12 2014

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

More terms from Michel Marcus, May 12 2014

A240676 Number of digits in the decimal expansion of n^7.

Original entry on oeis.org

1, 1, 3, 4, 5, 5, 6, 6, 7, 7, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13

Offset: 0

Michelle Tu, Apr 28 2014

			a(1) = 1, because 1^7 = 1.
a(2) = 4, because 2^7 = 1024.

a(n)=max(#digits(n^7),1) \\ Charles R Greathouse IV, May 12 2014

a(n) = A055642(n^7) = A055642(A001015(n)).

cp's OEIS Frontend

User: Michelle Tu

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

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