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A167752
Hankel transform of A167750.
3
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
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
CROSSREFS
Cf. A167753.
Sequence in context: A297086 A349920 A369253 * A240025 A100923 A050073
KEYWORD
sign
AUTHOR
Paul Barry, Nov 10 2009
STATUS
approved