id:A055642 - OEIS Search Results

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Number of digits in decimal expansion of n.

+0
99

1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3 (list; graph; listen)

	OFFSET	`0,11`
	FORMULA	`a(n)=floor[log10(10n)] = A004216(n)+1 =A004218(n+1)`
	MATHEMATICA	`Join[{1}, Array[ Floor[ Log[10, 10# ]] &, 104]] (from Robert G. Wilson v (rgwv(at)rgwv.com), Jan 04 2006)`
	PROGRAM	`(PARI) A055642(n)=#Str(n) [From M. F. Hasler (MHasler(AT)univ-ag.fr), Nov 17 2008]`
	CROSSREFS	`Sequence in context: A036453 A040000 A007395 this_sequence A138902 A036452 A102572` `Adjacent sequences: A055639 A055640 A055641 this_sequence A055643 A055644 A055645`
	KEYWORD	`base,easy,nonn,nice`
	AUTHOR	`Henry Bottomley (se16(AT)btinternet.com), Jun 06 2000`

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.

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