id:A055687 - OEIS Search Results

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4^n (mod n-1) = -1.

+0
1

2, 18, 4098, 7362, 85074, 658530, 3999138, 72281282 (list; graph; listen)

	OFFSET	`1,1`
	MATHEMATICA	`Do[If[PowerMod[4, n, n-1]==n-2, Print[n]], {n, 2, 10^8}]`
	CROSSREFS	`Sequence in context: A155206 A076954 A060598 this_sequence A006262 A003043 A059783` `Adjacent sequences: A055684 A055685 A055686 this_sequence A055688 A055689 A055690`
	KEYWORD	`nonn`
	AUTHOR	`Robert G. Wilson v (rgwv(AT)rgwv.com), Jun 09 2000`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.