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A046730 A002172/2. 1
-1, 3, 1, -5, -1, 5, 7, -5, -3, 5, 9, -1, 3, -7, -11, 7, 11, -13, -9, -7, -1, 15, 13, -15, 1, -13, -9, 5, -17, 13, 11, 9, -5, 17, 7, -17, 19, 1, -3, 15, 17, -7, 21, 19, -5, -11, -21, 19, 13, 1, -23, 5, -17, -19, 25, -13, -25, -23, -1, -5, 15, 27, -9, -19, 25, -17, 11, 5, -25, 27, 23, 29, -29, 25 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

CROSSREFS

Sequence in context: A154723 A114567 A001051 * A002972 A029652 A129510

Adjacent sequences:  A046727 A046728 A046729 * A046731 A046732 A046733

KEYWORD

sign

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified February 16 07:10 EST 2012. Contains 205874 sequences.