A165469 - OEIS

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A165469

Numbers of the form 4n+3 for which Sum_{i=1..u} J(i,4n+3) is never zero for any u in range [1,(2n+1)], where J(i,m) is the Jacobi symbol.

4

3, 7, 15, 23, 31, 39, 47, 55, 71, 79, 87, 95, 111, 119, 143, 151, 159, 167, 183, 191, 199, 215, 231, 239, 255, 263, 271, 287, 303, 311, 327, 335, 359, 383, 391, 399, 407, 431, 439, 447, 455, 471, 479, 503, 511, 519, 527, 535, 551, 559, 591, 599, 615, 623

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OFFSET

1,1

LINKS

Table of n, a(n) for n=1..54.

CROSSREFS

a(n) = A004767(A165468(n)). Setwise difference of A095100 and A165608. A165580 gives the primes in this sequence.

Sequence in context: A103007 A077790 A322971 * A160160 A192122 A069119

Adjacent sequences: A165466 A165467 A165468 * A165470 A165471 A165472

KEYWORD

nonn

AUTHOR

Antti Karttunen, Oct 06 2009

STATUS

approved