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Search: id:A161718
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| A161718 |
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Boubaker polynomials B_n(x) evaluated at x= -2. |
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+0
1
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| 1, -2, 6, -10, 14, -18, 22, -26, 30, -34, 38, -42, 46, -50, 54, -58, 62, -66, 70, -74, 78, -82, 86, -90, 94, -98, 102, -106, 110, -114, 118, -122, 126, -130, 134, -138, 142, -146, 150, -154, 158, -162, 166, -170, 174, -178, 182, -186, 190, -194, 198, -202, 206, -210, 214, -218, 222, -226, 230, -234
(list; graph; listen)
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OFFSET
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0,2
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LINKS
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S. Amir Hossein, A. E. Tabatabaei, Tinggang Zhao, O. Bamidele Awojoyogbe, Folorunsho O. Moses, Cut-off cooling velocity profiling inside a keyhole model using the Boubaker polynomials expansion scheme , Heat and Mass Transfer 45 (2009) 1247-1251
A. Luzon, M. A. Morson, Recurrence relations for polynomial sequences via Riordan matrices arXiv:0904.2672
O. D. Oyodum, O. B. Awojoyogbe, M. Dada and J. Magnuson, On the earliest definition of the Boubaker Polynomials, European Physical Journal-Applied Physics, EPJAP, 46 (2009), 21201.
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FORMULA
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a(n)= -2*a(n-1)-a(n-2), n>3. G.f.: (1+3*x^2)/(1+x)^2 [R. J. Mathar, Aug 27 2009]
a(n)= 4*(-1)^n*n+2*(-1)^(n+1) = (-1)^n*A016825(n-1), n>0. [R. J. Mathar, Aug 27 2009]
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CROSSREFS
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Cf. A135929, A137276.
Sequence in context: A111284 A130824 A016825 this_sequence A122905 A132417 A103747
Adjacent sequences: A161715 A161716 A161717 this_sequence A161719 A161720 A161721
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KEYWORD
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sign,easy
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AUTHOR
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Pr Mosbah Amlouk (Mosbah.Amlouk(AT)fsb.rnu.tn), Jun 17 2009
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EXTENSIONS
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Spurious commas in sequence deleted by N. J. A. Sloane, Aug 02 2009
Offset corrected, extended by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Aug 27 2009
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