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Search: id:A131386
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| 1, 0, -3, 8, -15, 24, -35, 48, -63, 80, -99, 120, -143, 168, -195, 224, -255, 288, -323, 360, -399, 440, -483, 528, -575, 624, -675, 728, -783, 840, -899, 960, -1023, 1088, -1155, 1224, -1295, 1368, -1443, 1520, -1599, 1680, -1763, 1848, -1935, 2024, -2115, 2208, -2303, 2400
(list; graph; listen)
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OFFSET
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1,3
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COMMENT
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The coefficient [x^2] of the Boubaker polynomial B_{2n}(x).
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LINKS
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A. Belhadj, O. F. Onyango, N. Rozibaeva, Boubaker Polynomials Expansion Scheme-Related Heat Transfer Investigation Inside Keyhole Model, J. of Thermophys. Heat Transf. 23 (3) (2009) 639-640.
S. Fridjine , M. Amlouk, A new parameter: An Abacus for optimizing PV-T hybrid solar device functional materials using the Boubaker Polynomials expansion scheme, Modern Phys. Lett. B 23 (2009) 2179-2191.
S. Tabatabaei, T. Zhao, O. B. Awojoyogbe, F. Moses, Cut-off cooling velocity profiling inside a keyhole model using the Boubaker polynomials expansion scheme, Heat Mass Transf. 45 (2009) 1247-1251.
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FORMULA
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a(n)= -3*a(n-1) -3*a(n-2) -a(n-3). G.f.: x*(1+3*x)/(1+x)^3. [R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Dec 07 2009
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CROSSREFS
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Cf. A135929, A138034, A137276, A167387, A167386, A167541, A167543.
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KEYWORD
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sign,easy,new
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AUTHOR
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Jamel Ghanouchi (jamel.ghanouchi(AT)topnet.tn), Aug 26 2008
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EXTENSIONS
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Entry completely rewriten by Jamel Ghanouchi (jamel.ghanouchi(AT)topnet.tn), Nov 02 2009
Terms corrected by Jamel Ghanouchi (jamel.ghanouchi(AT)topnet.tn), Nov 07 2009
Definition clarified; zeros skipped; sequence extended - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Dec 07 2009
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