The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A165581 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A165581

Legendre symbol (n,524287).
(history; published version)

#5 by Charles R Greathouse IV at Mon Aug 06 16:33:49 EDT 2012

STATUS

editing

approved

#4 by Charles R Greathouse IV at Mon Aug 06 16:33:46 EDT 2012

COMMENTS

Periodic with period 524287. - Charles R Greathouse IV, Aug 06 2012

PROG

(PARI) a(n)=kronecker(n, 524287) \\ Charles R Greathouse IV, Aug 06 2012

KEYWORD

sign,mult,easy

STATUS

approved

editing

#3 by Russ Cox at Sat Mar 31 13:21:19 EDT 2012

AUTHOR

_Antti Karttunen (His-Firstname.His-Surname(AT)gmail.com), _, Sep 22 2009

Discussion

Sat Mar 31

13:21

OEIS Server: https://oeis.org/edit/global/881

#2 by N. J. A. Sloane at Thu Nov 11 07:34:06 EST 2010

LINKS

A. Karttunen, <a href="/A165581/b165581.txt">Table of n, a(n) for n = 0..524287</a>

KEYWORD

sign,mult,new

#1 by N. J. A. Sloane at Tue Jun 01 03:00:00 EDT 2010

NAME

Legendre symbol (n,524287).

DATA

0, 1, 1, -1, 1, -1, -1, -1, 1, 1, -1, -1, -1, 1, -1, 1, 1, -1, 1, -1, -1, 1, -1, -1, -1, 1, 1, -1, -1, 1, 1, 1, 1, 1, -1, 1, 1, 1, -1, -1, -1, 1, 1, -1, -1, -1, -1, -1, -1, 1, 1, 1, 1, 1, -1, 1, -1, 1, 1, 1, 1, -1, 1, -1, 1, -1, 1, 1, -1, 1, 1, 1, 1, 1, 1, -1, -1, 1, -1, 1, -1, 1, 1, -1

OFFSET

0,1

COMMENTS

524287 is the 7th Mersenne prime, A000668(7) = 2^19 - 1.

LINKS

A. Karttunen, <a href="b165581.txt">Table of n, a(n) for n = 0..524287</a>

CROSSREFS

Partial sums: A165582.

KEYWORD

sign,mult

AUTHOR

Antti Karttunen (His-Firstname.His-Surname(AT)gmail.com), Sep 22 2009

STATUS

approved