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A160195 Numerator of Hermite(n, 11/28). 1

%I #13 Sep 08 2022 08:45:44

%S 1,11,-271,-11605,191041,20298091,-151161359,-49403884981,

%T -128655965695,153515367677771,2142567291427441,-578212001091160469,

%U -15599082172637890751,2548319349233802047915,107524435593334513794161,-12802407797068425987221749

%N Numerator of Hermite(n, 11/28).

%H G. C. Greubel, <a href="/A160195/b160195.txt">Table of n, a(n) for n = 0..417</a>

%F From _G. C. Greubel_, Sep 24 2018: (Start)

%F a(n) = 14^n * Hermite(n, 11/28).

%F E.g.f.: exp(11*x - 196*x^2).

%F a(n) = numerator(Sum_{k=0..floor(n/2)} (-1)^k*n!*(11/14)^(n-2*k)/(k!*(n-2*k)!)). (End)

%e Numerators of 1, 11/14, -271/196, -11605/2744, 191041/38416, ...

%t Table[14^n*HermiteH[n, 11/28], {n, 0, 30}] (* _G. C. Greubel_, Sep 24 2018 *)

%o (PARI) a(n)=numerator(polhermite(n, 11/28)) \\ _Charles R Greathouse IV_, Jan 29 2016

%o (PARI) x='x+O('x^30); Vec(serlaplace(exp(11*x - 196*x^2))) \\ _G. C. Greubel_, Sep 24 2018

%o (Magma) [Numerator((&+[(-1)^k*Factorial(n)*(11/14)^(n-2*k)/( Factorial(k) *Factorial(n-2*k)): k in [0..Floor(n/2)]])): n in [0..30]]; // _G. C. Greubel_, Sep 24 2018

%Y Cf. A001023 (denominators).

%K sign,frac

%O 0,2

%A _N. J. A. Sloane_, Nov 12 2009

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Last modified April 18 22:18 EDT 2024. Contains 371782 sequences. (Running on oeis4.)