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A077902
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Expansion of (1-x)^(-1)/(1 + x - x^2 + x^3).
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2
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1, 0, 2, -2, 5, -8, 16, -28, 53, -96, 178, -326, 601, -1104, 2032, -3736, 6873, -12640, 23250, -42762, 78653, -144664, 266080, -489396, 900141, -1655616, 3045154, -5600910, 10301681, -18947744, 34850336, -64099760, 117897841, -216847936, 398845538, -733591314, 1349284789, -2481721640
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OFFSET
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0,3
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LINKS
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MATHEMATICA
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a=0; b=0; c=0; lst={}; Do[z=a+b+c+1; AppendTo[lst, z]; a=b; b=c; c=z; z=a+b+c-1; AppendTo[lst, z]; a=b; b=c; c=z, {n, 5!}]; lst(*Abs values*) (* Vladimir Joseph Stephan Orlovsky, Feb 17 2010 *)
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PROG
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CROSSREFS
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KEYWORD
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sign,easy
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AUTHOR
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STATUS
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approved
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