A058857 - OEIS

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A058857

Numbers n such that the trinomial x^n + x + 1 is irreducible over GF(7).

3, 4, 9, 33, 52, 177, 1042 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	MATHEMATICA	`Do[ If[ ToString[ Factor[ x^n + x + 1, Modulus -> 7 ] ] == ToString[ x^n + x + 1 ], Print[ n ] ], {n, 1, 1121} ]`
	CROSSREFS	`Sequence in context: A038629 A105229 A080849 * A084715 A015240 A032477` `Adjacent sequences: A058854 A058855 A058856 * A058858 A058859 A058860`
	KEYWORD	`nonn`
	AUTHOR	`Robert G. Wilson v (rgwv(AT)rgwv.com), Jan 05 2001`

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Last modified February 17 13:28 EST 2012. Contains 206031 sequences.