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A103138
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Second column of inverse of Delannoy triangle.
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0
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0, 1, -3, 10, -38, 158, -698, 3218, -15310, 74614, -370610, 1869338, -9549174, 49302030, -256859754, 1348695330, -7129819038, 37916710374, -202708895330, 1088819681834, -5873129780422, 31800514324606, -172780691083034, 941714095635890, -5147414826440558, 28210011946820438
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,3
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COMMENTS
| The positive sequence has g.f. (1+xS(x))xS(x). Second column of A103136.
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FORMULA
| G.f.: (1-xS(-x))xS(-x), where S(x) is the g.f. of the large Schroeder numbers A006318.
Conjecture: 2n*a(n) +(13n-20)*a(n-1) +(8n-27)*a(n-2) +(n-5)*a(n-3)=0. - R. J. Mathar, Dec 14 2011
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CROSSREFS
| Sequence in context: A151062 A000902 A151063 * A074527 A186367 A010842
Adjacent sequences: A103135 A103136 A103137 * A103139 A103140 A103141
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KEYWORD
| easy,sign
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AUTHOR
| Paul Barry (pbarry(AT)wit.ie), Jan 24 2005
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