id:A078554 - OEIS Search Results

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Largest prime dividing sigma[5,n].

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11, 61, 151, 521, 61, 191, 41, 4561, 521, 13421, 151, 2411, 191, 521, 1801, 101, 4561, 2251, 521, 191, 13421, 211, 61, 1741, 2411, 1181, 191, 401, 521, 21821, 331, 13421, 101, 521, 4561, 1824841, 2251, 2411, 521, 4111, 191, 3341101, 13421, 4561, 211 (list; graph; listen)

	OFFSET	`1,1`
	FORMULA	`a(n)=A006530[A001160(n)]`
	EXAMPLE	`Observe nontrivial frequent occurrence of several primes like 61,191,521,4561, etc.`
	CROSSREFS	`Cf. A006530, A001157-A001160, A071190.` `Sequence in context: A073625 A106993 A066597 this_sequence A002650 A060884 A141935` `Adjacent sequences: A078551 A078552 A078553 this_sequence A078555 A078556 A078557`
	KEYWORD	`nonn`
	AUTHOR	`Labos E. (labos(AT)ana.sote.hu), Dec 05 2002`

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

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