A068954 - OEIS

This site is supported by donations to The OEIS Foundation.

A068954

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

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

	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: A093162 A206763 A201205 * A068955 A151393 A007781` `Adjacent sequences: A068951 A068952 A068953 * A068955 A068956 A068957`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Mar 11 2002`

Content is available under The OEIS End-User License Agreement .

Last modified February 15 21:45 EST 2012. Contains 205860 sequences.