id:A057111 - OEIS Search Results

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Numbers n which are a factor of (LPP(n)-1)!, where LPP(n) is the largest prime power factor of n.

+0
2

8, 9, 16, 18, 24, 25, 27, 32, 36, 40, 45, 48, 49, 50, 54, 56, 63, 64, 72, 75, 80, 81, 90, 96, 98, 100, 108, 112, 120, 121, 125, 126, 128, 135, 144, 147, 150, 160, 162, 168, 169, 175, 176, 180, 189, 192, 196, 200, 208, 216, 224, 225, 240, 242, 243, 245, 250, 252 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`18 is in the sequence since 9 is the largest prime power factor of 18, and 18 is a factor of (9-1)!=8!=40320=18*2240.`
	CROSSREFS	`Cf. A002034, A034699, A057109, A057110. Distinct from A046790 although similar initial terms.` `Sequence in context: A047393 A037371 A046790 this_sequence A022098 A129659 A041130` `Adjacent sequences: A057108 A057109 A057110 this_sequence A057112 A057113 A057114`
	KEYWORD	`easy,nonn`
	AUTHOR	`Henry Bottomley (se16(AT)btinternet.com), Aug 08 2000`
	EXTENSIONS	`More terms from James A. Sellers (sellersj(AT)math.psu.edu), Aug 22 2000`

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Last modified September 5 01:44 EDT 2008. Contains 143476 sequences.

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