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A171552 a(n) = 2^n*floor((5-2n)/3). 1
1, 2, 0, -8, -16, -64, -192, -384, -1024, -2560, -5120, -12288, -28672, -57344, -131072, -294912, -589824, -1310720, -2883584, -5767168, -12582912, -27262976, -54525952, -117440512, -251658240, -503316480, -1073741824, -2281701376 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
COMMENTS
Hankel transform of A131428.
LINKS
FORMULA
G.f.: (1-4x^2-16x^3)/((1-2x)(1-8x^3)).
CROSSREFS
Cf. A131428.
Sequence in context: A120559 A120555 A128063 * A087205 A319196 A308536
KEYWORD
easy,sign
AUTHOR
Paul Barry, Dec 11 2009
STATUS
approved

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Last modified June 21 03:54 EDT 2024. Contains 373540 sequences. (Running on oeis4.)