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(MAGMAMagma) [n*(6*n^2+22*n+3*((-1)^n+7)): n in [1..40]]; // G. C. Greubel, Jan 05 2019
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Molecular topological indices of the web graphs.
G. C. Greubel, <a href="/A192850/b192850.txt">Table of n, a(n) for n = 1..1000</a>
G.f.: 2*x*(x^4+2*x^3+46*x+23)/((x-1)^4*(x+1)^2). [_- _Colin Barker_, Aug 07 2012]
E.g.f.: x*((49 +40*x +6*x^2)*exp(x) - 3*exp(-x)). - G. C. Greubel, Jan 05 2018
Table[n*(6*n^2+22*n+3*((-1)^n+7)), {n, 1, 40}] (* G. C. Greubel, Jan 05 2019 *)
(PARI) vector(40, n, n*(6*n^2+22*n+3*((-1)^n+7))) \\ G. C. Greubel, Jan 05 2019
(MAGMA) [n*(6*n^2+22*n+3*((-1)^n+7)): n in [1..40]]; // G. C. Greubel, Jan 05 2019
(Sage) [n*(6*n^2+22*n+3*((-1)^n+7)) for n in (1..40)] # G. C. Greubel, Jan 05 2019
(GAP) List([1..40], n -> n*(6*n^2+22*n+3*((-1)^n+7))); # G. C. Greubel, Jan 05 2019
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<a href="/index/Rec#order_06">Index entries for linear recurrences with constant coefficients</a>, signature (2,1,-4,1,2,-1).
<a href="/index/Rec">Index to sequences with entries for linear recurrences with constant coefficients</a>, signature (2,1,-4,1,2,-1).
<a href="/index/Rea#recLCCRec">Index to sequences with linear recurrences with constant coefficients</a>, signature (2,1,-4,1,2,-1).
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