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A078016
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Expansion of (1-x)/(1-x+x^2+x^3).
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0
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1, 0, -1, -2, -1, 2, 5, 4, -3, -12, -13, 2, 27, 38, 9, -56, -103, -56, 103, 262, 215, -150, -627, -692, 85, 1404, 2011, 522, -2893, -5426, -3055, 5264, 13745, 11536, -7473, -32754, -36817, 3410, 72981, 106388, 29997, -149372, -285757, -166382, 268747, 720886, 618521, -371112, -1710519
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,4
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FORMULA
| a(0)=1, a(1)=0, a(2)=-1, a(n)=a(n-1)-a(n-2)-a(n-3) [From Harvey P. Dale, Nov 08 2011]
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MATHEMATICA
| CoefficientList[Series[(1-x)/(1-x+x^2+x^3), {x, 0, 50}], x] (* or *) LinearRecurrence[ {1, -1, -1}, {1, 0, -1}, 50] (* From Harvey P. Dale, Nov 08 2011 *)
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CROSSREFS
| Sequence in context: A121435 A137156 A136457 * A078046 A084600 A167482
Adjacent sequences: A078013 A078014 A078015 * A078017 A078018 A078019
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KEYWORD
| sign
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), Nov 17 2002
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