A240676 - OEIS

A240676

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

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 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`0,3`
	LINKS	`Table of n, a(n) for n=0..68.`
	FORMULA	`a(n) = A055642(n^7) = A055642(A001015(n)).`
	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	`Sequence in context: A358700 A307136 A339362 * A037038 A348133 A278375` `Adjacent sequences: A240673 A240674 A240675 * A240677 A240678 A240679`
	KEYWORD	`nonn,base,easy`
	AUTHOR	`Michelle Tu, Apr 28 2014`
	STATUS	`approved`