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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
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,3
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MATHEMATICA
| 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*) [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Feb 17 2010]
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CROSSREFS
| Sequence in context: A052527 A042982 A006367 * A005834 A052531 A095005
Adjacent sequences: A077899 A077900 A077901 * A077903 A077904 A077905
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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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