id:A152178 - OEIS Search Results

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Smallest prime factor of G-n, where G is any sufficiently large power tower of 3, e.g., Graham's number.

+0
2

3, 2, 5, 2, 107, 2, 3, 2, 101, 2, 29, 2, 3, 2, 13, 2, 3626257, 2, 3, 2, 7, 2, 5, 2, 3, 2, 1511, 2, 173, 2, 3, 2, 5, 2, 7, 2, 3, 2, 197, 2, 13, 2, 3, 2, 17491, 2, 18540593, 2, 3, 2, 53, 2, 5, 2, 3, 2, 19, 2, 17, 2, 3, 2, 5, 2, 11, 2, 3, 2, 29, 2, 97, 2, 3, 2, 251, 2, 7, 2, 3, 2, 349, 2, 5, 2, 3, 2 (list; graph; listen)

	OFFSET	`0,1`
	EXAMPLE	`a(2) = 5 because 3^3^3^... - 2 = 0 (mod 5).`
	CROSSREFS	`Cf. A152177` `Sequence in context: A103833 A046227 A120842 this_sequence A103340 A106615 A130299` `Adjacent sequences: A152175 A152176 A152177 this_sequence A152179 A152180 A152181`
	KEYWORD	`nonn`
	AUTHOR	`Karl Heuer (kwzh(AT)gnu.org), Nov 28 2008`

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Last modified December 8 08:31 EST 2009. Contains 170430 sequences.

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