Search: id:A131386
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%I A131386
%S A131386 1,0,3,8,15,24,35,48,63,80,99,120,143,168,195,224,255,288,323,360,399,
%T A131386 440,483,528,575,624,675,728,783,840,899,960,1023,1088,1155,1224,1295,
%U A131386 1368,1443,1520,1599,1680,1763,1848,1935,2024,2115,2208,2303,2400
%V A131386 1,0,-3,8,-15,24,-35,48,-63,80,-99,120,-143,168,-195,224,-255,288,-323,
               360,-399,
%W A131386 440,-483,528,-575,624,-675,728,-783,840,-899,960,-1023,1088,-1155,1224,
               -1295,
%X A131386 1368,-1443,1520,-1599,1680,-1763,1848,-1935,2024,-2115,2208,-2303,2400
%N A131386 (-1)^n*n*(n-2).
%C A131386 The coefficient [x^2] of the Boubaker polynomial B_{2n}(x).
%H A131386 A. Belhadj, O. F. Onyango, N. Rozibaeva, <a href="http://dx.doi.org/10.2514/
               1.41850">Boubaker Polynomials Expansion Scheme-Related Heat Transfer 
               Investigation Inside Keyhole Model</a>, J. of Thermophys. Heat Transf. 
               23 (3) (2009) 639-640.
%H A131386 S. Fridjine , M. Amlouk, <a href="http://dx.doi.org/10.1142/S0217984909020321">
               A new parameter: An Abacus for optimizing PV-T hybrid solar device 
               functional materials using the Boubaker Polynomials expansion scheme</
               a>, Modern Phys. Lett. B 23 (2009) 2179-2191.
%H A131386 S. Tabatabaei, T. Zhao, O. B. Awojoyogbe, F. Moses, <a href="http://dx.doi.org/
               10.1007/s00231-009-0493-x">Cut-off cooling velocity profiling inside 
               a keyhole model using the Boubaker polynomials expansion scheme</
               a>, Heat Mass Transf. 45 (2009) 1247-1251.
%F A131386 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
%Y A131386 Cf. A135929, A138034, A137276, A167387, A167386, A167541, A167543.
%Y A131386 Sequence in context: A005563 A132411 A147998 this_sequence A164003 A067998 
               A060615
%Y A131386 Adjacent sequences: A131383 A131384 A131385 this_sequence A131387 A131388 
               A131389
%K A131386 sign,easy,new
%O A131386 1,3
%A A131386 Jamel Ghanouchi (jamel.ghanouchi(AT)topnet.tn), Aug 26 2008
%E A131386 Entry completely rewriten by Jamel Ghanouchi (jamel.ghanouchi(AT)topnet.tn), 
               Nov 02 2009
%E A131386 Terms corrected by Jamel Ghanouchi (jamel.ghanouchi(AT)topnet.tn), Nov 
               07 2009
%E A131386 Definition clarified; zeros skipped; sequence extended - R. J. Mathar 
               (mathar(AT)strw.leidenuniv.nl), Dec 07 2009

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