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A159541 Numerator of Hermite(n, 13/17). 3

%I #12 Sep 08 2022 08:45:43

%S 1,26,98,-27508,-885140,40584856,3613260856,-46803498352,

%T -15836144380528,-195320377514080,77301293252140576,

%U 3138785406587037376,-409873201925846810432,-32427318830159708311168,2236676949686660517495680,320555464665505533108859136

%N Numerator of Hermite(n, 13/17).

%H G. C. Greubel, <a href="/A159541/b159541.txt">Table of n, a(n) for n = 0..404</a>

%F From _G. C. Greubel_, Jul 02 2018: (Start)

%F a(n) = 17^n * Hermite(n, 13/17).

%F E.g.f.: exp(26*x-289*x^2).

%F a(n) = numerator(Sum_{k=0..floor(n/2)} (-1)^k*n!*(26/17)^(n-2*k)/(k!*(n-2*k)!)). (End)

%t Numerator[Table[HermiteH[n,13/17],{n,0,30}]] (* _Vladimir Joseph Stephan Orlovsky_, May 08 2011 *)

%t Table[17^n*HermiteH[n, 13/17], {n,0,50}] (* _G. C. Greubel_, Jul 02 2018 *)

%o (PARI) a(n)=numerator(polhermite(n,13/17)) \\ _Charles R Greathouse IV_, Jan 29 2016

%o (Magma) [Numerator((&+[(-1)^k*Factorial(n)*(26/17)^(n-2*k)/( Factorial(k) *Factorial(n-2*k)): k in [0..Floor(n/2)]])): n in [0..30]]; // _G. C. Greubel_, Jul 02 2018

%Y Cf. A159539, A159540.

%K sign,frac

%O 0,2

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

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Last modified April 23 03:30 EDT 2024. Contains 371906 sequences. (Running on oeis4.)