id:A070776 - OEIS Search Results

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Numbers n such that number of terms in the n-th cyclotomic polynomial equals largest prime factor of n.

+0
4

2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 17, 18, 19, 20, 22, 23, 24, 25, 26, 27, 28, 29, 31, 32, 34, 36, 37, 38, 40, 41, 43, 44, 46, 47, 48, 49, 50, 52, 53, 54, 56, 58, 59, 61, 62, 64, 67, 68, 71, 72, 73, 74, 76, 79, 80, 81, 82, 83, 86, 88, 89, 92, 94, 96, 97, 98, 100 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`n=10: Cyclotomic[10,x]=1-x+x^2-x^3+x^4 with 5 terms [including 1] which equals largest prime factor (5) of 10=n.`
	CROSSREFS	`When A070536(n)=A051664[n]-A006530[n]=0. Cf. A006530, A051664, A070537.` `Sequence in context: A080944 A004829 A075592 this_sequence A076564 A061773 A125007` `Adjacent sequences: A070773 A070774 A070775 this_sequence A070777 A070778 A070779`
	KEYWORD	`nonn`
	AUTHOR	`Labos E. (labos(AT)ana.sote.hu), May 07 2002`

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Last modified September 5 19:27 EDT 2008. Contains 143485 sequences.

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