id:A068954 - OEIS Search Results

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Smallest prime factor of n^n-(n-1)^(n-1).

+0
3

3, 23, 229, 19, 101, 776887, 3, 7, 29, 275311670611, 5, 28201, 3, 52489, 109, 808793517812627212561, 9680119, 5 (list; graph; listen)

	OFFSET	`2,1`
	FORMULA	`a(n)=A020639(A007781(n)).`
	EXAMPLE	`A007781(14) = 10809131718965763 = 3 * 61^2 * 968299894201,` `therefore a(14) = 3.`
	CROSSREFS	`Cf. A068955, A068956.` `Sequence in context: A068691 A093135 A093162 this_sequence A068955 A151393 A007781` `Adjacent sequences: A068951 A068952 A068953 this_sequence A068955 A068956 A068957`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Mar 11 2002`

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Last modified December 4 20:00 EST 2008. Contains 151309 sequences.