A167752 - OEIS

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A167752

Hankel transform of A167750.

1, 1, 1, 0, -1, 0, 1, 0, 0, -1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, -1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, -1 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`0,1`
	COMMENTS	`The nonzero terms appear to be indexed by the quarter-squares floor((n+1)^2/4) = A002620(n+1).` `abs(a(n)) = A237347(n) - 2. - Reinhard Zumkeller, Mar 18 2014`
	LINKS	`Table of n, a(n) for n=0..49.`
	CROSSREFS	`Cf. A167753.` `Sequence in context: A353787 A297086 A349920 * A240025 A100923 A050073` `Adjacent sequences: A167749 A167750 A167751 * A167753 A167754 A167755`
	KEYWORD	`sign`
	AUTHOR	`Paul Barry, Nov 10 2009`
	STATUS	`approved`

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Last modified February 2 05:15 EST 2023. Contains 359997 sequences. (Running on oeis4.)