A121241 - OEIS

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A121241

Change 0 to -1 in A090678.

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; internal format)

	OFFSET	`0,1`
	FORMULA	`a(n) = (-1)^(1+A088567(n)).`
	CROSSREFS	`Sequence in context: A143431 A064179 A065357 * A122188 A000012 A158388` `Adjacent sequences: A121238 A121239 A121240 * A121242 A121243 A121244`
	KEYWORD	`sign`
	AUTHOR	`Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Aug 22 2006`

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Last modified February 17 20:50 EST 2012. Contains 206085 sequences.