id:A112072 - OEIS Search Results

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A112072

Odd numbers n for which 3 is the smallest i (>= 1) with Jacobi symbol J(i,n) getting either a value 0 or -1.

+0
3

7, 9, 15, 17, 31, 33, 39, 41, 55, 57, 63, 65, 79, 81, 87, 89, 103, 105, 111, 113, 127, 129, 135, 137, 151, 153, 159, 161, 175, 177, 183, 185, 199, 201, 207, 209, 223, 225, 231, 233, 247, 249, 255, 257, 271, 273, 279, 281, 295, 297, 303, 305, 319, 321, 327 (list; graph; listen)

	OFFSET	`1,1`
	FORMULA	`a(n)=-7+Sum_{k=0..n}{-2(k mod 4)+2((k+1) mod 4)+4*((k+3) mod 4)} - Paolo P. Lava (ppl(AT)spl.at), Aug 29 2007`
	CROSSREFS	`Row 2 of A112070. a(n) = 2*A112062(n)+1.` `Sequence in context: A020939 A073457 A047522 this_sequence A024902 A111312 A087680` `Adjacent sequences: A112069 A112070 A112071 this_sequence A112073 A112074 A112075`
	KEYWORD	`nonn`
	AUTHOR	`Antti Karttunen (His-Firstname.His-Surname(AT)iki.fi), Aug 27 2005`

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Last modified August 29 17:54 EDT 2008. Contains 143238 sequences.

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