A137718 A scaled Hankel transform.

1, -4, 2, 4, -8, 8, 8, -32, 16, 32, -64, 64, 64, -256, 128, 256, -512, 512, 512, -2048, 1024, 2048, -4096, 4096, 4096, -16384, 8192, 16384, -32768, 32768, 32768, -131072, 65536, 131072, -262144, 262144, 262144

Offset: 0

Author

Paul Barry, Feb 08 2008

Keywords

• easy
• sign

Comments

A137717=2^floor(n/2)*a(n) is the Hankel transform of A106191.

Crossrefs

Cf. A137719.

Formula

a(n)=A137717(n)/2^floor(n/2).

Empirical g.f.: -(4*x^3-4*x^2+4*x-1) / (4*x^4+2*x^2+1). - Colin Barker, Jun 27 2013