cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A134175 a(n) = (32/2)*(n-1)*(n-2)*(n-3)*(n-4).

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%I A134175 #18 Jun 17 2017 03:06:07
%S A134175 0,0,0,0,384,1920,5760,13440,26880,48384,80640,126720,190080,274560,
%T A134175 384384,524160,698880,913920,1175040,1488384,1860480,2298240,2808960,
%U A134175 3400320,4080384,4857600,5740800,6739200,7862400,9120384,10523520,12082560,13808640,15713280
%N A134175 a(n) = (32/2)*(n-1)*(n-2)*(n-3)*(n-4).
%H A134175 G. C. Greubel, <a href="/A134175/b134175.txt">Table of n, a(n) for n = 1..1000</a>
%H A134175 D. Zvonkine, <a href="http://www.math.jussieu.fr/~zvonkine/">Home Page</a>
%H A134175 D. Zvonkine, <a href="http://mi.mathnet.ru/eng/mmj274">Counting ramified coverings and intersection theory on Hurwitz spaces II (local structure of Hurwitz spaces and combinatorial results)</a>, Moscow Mathematical Journal, vol. 7 (2007), no. 1, 135-162.
%H A134175 <a href="/index/Rec#order_05">Index entries for linear recurrences with constant coefficients</a>, signature (5,-10,10,-5,1).
%F A134175 G.f.: 384*x^5/(1-x)^5. - _Colin Barker_, Aug 28 2012
%t A134175 LinearRecurrence[{5, -10, 10, -5, 1}, {0, 0, 0, 0, 384} , 50] (* or *) Table[(32/2)*(n-1)*(n-2)*(n-3)*(n-4), {n,1,50}] (* _G. C. Greubel_, May 30 2016 *)
%o A134175 (PARI) a(n) = 16*(n-1)*(n-2)*(n-3)*(n-4) \\ _Michel Marcus_, Jun 27 2013
%Y A134175 Cf. A052762.
%K A134175 nonn,easy
%O A134175 1,5
%A A134175 _N. J. A. Sloane_, Jan 30 2008