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A151912
Expansion of (1-8x-8x^3)/(1-2x+4x^2)^2.
0
1, -4, -28, -56, 32, 416, 832, -256, -4864, -9728, 2048, 51200, 102400, -16384, -507904, -1015808, 131072, 4849664, 9699328, -1048576, -45088768, -90177536, 8388608, 411041792, 822083584, -67108864, -3690987520, -7381975040
OFFSET
0,2
COMMENTS
2*a(n) is the Hankel transform of A066796.
FORMULA
a(n)=2^n*A138341(n);
CROSSREFS
Sequence in context: A179279 A061428 A069518 * A307135 A101002 A197542
KEYWORD
easy,sign
AUTHOR
Paul Barry, Mar 15 2008
STATUS
approved