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Search: id:A103366
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| A103366 |
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Second column of triangle A103364, which equals the matrix inverse of the Narayana triangle (A001263). |
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+0
4
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| 1, -3, 12, -70, 585, -6741, 103068, -2023092, 49615695, -1487006785, 53477384268, -2272859942574, 112699083156751, -6447858833644515, 421601806346674320, -31242589674606301224, 2604618355967848204587, -242686626407684239621113, 25124942798118355122058980
(list; graph; listen)
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OFFSET
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2,2
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PROGRAM
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(PARI) a(n)=if(n<2, 0, (matrix(n, n, m, j, binomial(m-1, j-1)*binomial(m, j-1)/j)^-1)[n, 2])
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CROSSREFS
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Cf. A001263, A103364, A103366, A103367.
Sequence in context: A077460 A001205 A112320 this_sequence A020530 A052676 A054640
Adjacent sequences: A103363 A103364 A103365 this_sequence A103367 A103368 A103369
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KEYWORD
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sign
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AUTHOR
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Paul D. Hanna (pauldhanna(AT)juno.com), Feb 02 2005
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