id:A099102 - OEIS Search Results

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Natural numbers n with fewer digits than sigma(n).

+0
2

6, 8, 9, 48, 54, 56, 60, 63, 64, 66, 68, 70, 72, 74, 75, 76, 78, 80, 81, 82, 84, 85, 86, 87, 88, 90, 91, 92, 93, 94, 95, 96, 98, 99, 360, 384, 390, 396, 408, 420, 432, 440, 444, 448, 450, 456, 460, 462, 468, 476, 480, 486, 490, 492, 498, 500, 504, 510, 512, 516, 520 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`This sequence is a comment on the referenced comment of R. K. Guy concerning the occurrence of 301-digit numbers.`
	LINKS	`R. K. Guy, Re: Odd Perfect Numbers.`
	EXAMPLE	`6 is in the sequence because 1, the number of digits in 6, is less than 2, the number of digits in 12 = sigma ( 6 ).`
	CROSSREFS	`Cf. A000203, A099103.` `Adjacent sequences: A099099 A099100 A099101 this_sequence A099103 A099104 A099105` `Sequence in context: A092115 A083966 A074326 this_sequence A001743 A046344 A116366`
	KEYWORD	`base,easy,nonn`
	AUTHOR	`Walter Nissen (wnissen(AT)tfn.net), Sep 25 2004`

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Last modified October 7 08:31 EDT 2008. Contains 144667 sequences.

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