id:A140180 - OEIS Search Results

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A number n is included if the smallest prime that is congruent to 1 (mod n) is <= the smallest prime that is congruent to -1 (mod n).

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1, 2, 5, 10, 11, 13, 16, 22, 23, 25, 26, 28, 29, 33, 35, 36, 39, 40, 41, 43, 46, 50, 52, 53, 56, 58, 61, 63, 65, 66, 67, 70, 73, 78, 81, 82, 83, 86, 88, 89, 92, 93, 95, 96, 100, 101, 105, 106, 111, 112, 113, 116, 119, 122, 124, 125, 126, 127, 130, 131, 134, 136, 145 (list; graph; listen)

	OFFSET	`1,2`
	LINKS	`Diana Mecum, Table of n, a(n) for n = 1..567` `Leroy Quet, Home Page (listed in lieu of email address)`
	EXAMPLE	`For n = 1 and 2 the smallest prime that is congruent to 1 (mod n) equals the smallest prime that is congruent to -1 (mod n). For all other n the inequality is strict.`
	CROSSREFS	`Cf. A093868, A140181.` `Sequence in context: A144793 A140707 A136817 this_sequence A056704 A163624 A167799` `Adjacent sequences: A140177 A140178 A140179 this_sequence A140181 A140182 A140183`
	KEYWORD	`nonn`
	AUTHOR	`Leroy Quet May 11 2008`
	EXTENSIONS	`More terms from Diana Mecum (diana.mecum(AT)gmail.com), Jul 04 2007`

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Last modified November 23 17:09 EST 2009. Contains 167438 sequences.

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