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A142585
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Inverse binomial transform of A014217.
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2
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1, 0, 1, 0, -1, 5, -14, 35, -81, 180, -389, 825, -1726, 3575, -7349, 15020, -30561, 61965, -125294, 252795, -509161, 1024100, -2057549, 4130225, -8284926, 16609455, -33282989, 66669660, -133507081, 267285605, -535010414, 1070731475, -2142612801, 4287086100
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,6
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FORMULA
| a(n) = (-1)^(n+1)*A027974(n-4), n>4.
G.f.: (1+3x+2x^2+x^3)/((1+2x)(1+x-x^2)). - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Sep 22 2008
Contribution from Johannes W. Meijer (meijgia(AT)hotmail.com), Aug 15 2010: (Start)
a(n) = (-1)^(n+1)*(2^(n-1)-F(n+1)-F(n-1)) with F(n)=A000045(n) for n>=1 with a(0)=1.
(End)
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CROSSREFS
| Sequence in context: A066767 A027974 A027983 * A193557 A187198 A097507
Adjacent sequences: A142582 A142583 A142584 * A142586 A142587 A142588
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KEYWORD
| sign
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AUTHOR
| Paul Curtz (bpcrtz(AT)free.fr), Sep 21 2008
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EXTENSIONS
| Edited and extended by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Sep 22 2008
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