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A121241 Change 0 to -1 in A090678. 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, -1, -1, 1, -1, 1, 1, -1, 1, -1, 1, -1, -1, 1, 1, -1, 1, -1, -1, 1, -1 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,1
LINKS
FORMULA
a(n) = (-1)^(1+A088567(n)).
CROSSREFS
Sequence in context: A064179 A065357 A119665 * A122188 A158388 A162285
KEYWORD
sign
AUTHOR
Philippe Deléham, Aug 22 2006
STATUS
approved

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Last modified February 21 03:04 EST 2024. Contains 370219 sequences. (Running on oeis4.)