id:A166049 - OEIS Search Results

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Integers of the form 4n+1 for which Sum_{i=1..u} J(i,4n+1) is never negative for any u in range [1,(2n)], where J(i,k) is the Jacobi symbol.

+0
3

1, 5, 9, 13, 21, 25, 37, 49, 81, 85, 93, 121, 165, 169, 225, 289, 361, 441, 529, 625, 729, 841, 961, 1089, 1225, 1369, 1521, 1681, 1849, 2025, 2209, 2401, 2601, 2809, 3025, 3249, 3481, 3721, 3969, 4225, 4489, 4761, 5041, 5329, 5625, 5929, 6241 (list; graph; listen)

	OFFSET	`1,2`
	CROSSREFS	`a(n) = A016813(A166048(n)). Union of A016754 and A166051.` `Sequence in context: A087461 A057961 A089217 this_sequence A053411 A023382 A151907` `Adjacent sequences: A166046 A166047 A166048 this_sequence A166050 A166051 A166052`
	KEYWORD	`nonn`
	AUTHOR	`Antti Karttunen (His-Firstname.His-Surname(AT)gmail.com), Oct 08 2009`

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Last modified December 17 23:40 EST 2009. Contains 171025 sequences.

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