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Search: id:A078044
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A078044 Expansion of (1-x)/(1+x+2*x^3). +0
2
1, -2, 2, -4, 8, -12, 20, -36, 60, -100, 172, -292, 492, -836, 1420, -2404, 4076, -6916, 11724, -19876, 33708, -57156, 96908, -164324, 278636, -472452, 801100, -1358372, 2303276, -3905476, 6622220, -11228772, 19039724, -32284164, 54741708, -92821156, 157389484, -266872900 (list; graph; listen)
OFFSET

0,2

CROSSREFS

Equals 4 * (-1)^n * A003476(n-2), n>2.

Sequence in context: A019463 A086700 A104221 this_sequence A052907 A048114 A102456

Adjacent sequences: A078041 A078042 A078043 this_sequence A078045 A078046 A078047

KEYWORD

sign

AUTHOR

njas, Nov 17 2002

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Last modified July 6 17:22 EDT 2008. Contains 140988 sequences.


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