id:A134189 - OEIS Search Results

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a(1)=1. a(n) = n*a(n-1) if n*a(n-1) has fewer or equal the number of divisors as n+a(n-1) does. a(n) = n+a(n-1) if n*a(n-1) has a greater number of divisors than n+a(n-1) does.

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1, 2, 5, 9, 14, 20, 27, 35, 44, 54, 65, 77, 1001 (list; graph; listen)

	OFFSET	`1,2`
	LINKS	`Leroy Quet, Home Page (listed in lieu of email address)`
	EXAMPLE	`a(12)+13 = 77 + 13 = 90. a(12)13 = 77 13 = 1001. 90 has 12 divisors. 1001 has 8 divisors. Since 1001 has fewer divisors than 90, a(13) is therefore 1001.`
	CROSSREFS	`Cf. A134190.` `Sequence in context: A000096 A080956 A132337 this_sequence A109470 A112873 A048093` `Adjacent sequences: A134186 A134187 A134188 this_sequence A134190 A134191 A134192`
	KEYWORD	`more,nonn`
	AUTHOR	`Leroy Quet Oct 12 2007`

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Last modified December 16 17:18 EST 2009. Contains 170825 sequences.

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