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

Offset: 0

Author

Paul Barry, Nov 10 2009

Keywords

• sign

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.