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A137718
A scaled Hankel transform.
1
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
0,2
COMMENTS
A137717=2^floor(n/2)*a(n) is the Hankel transform of A106191.
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
CROSSREFS
Cf. A137719.
Sequence in context: A154793 A016693 A345413 * A007361 A128136 A048147
KEYWORD
easy,sign
AUTHOR
Paul Barry, Feb 08 2008
STATUS
approved