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A160317
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Numerator of Hermite(n, 19/31).
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1
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1, 38, -478, -164236, -3484820, 1130223208, 76437602104, -10129105154704, -1413297494585968, 102039816064461920, 28324733071797627424, -884865408030648260288, -632466392109110072889152, -3625187129327311294505344, 15665048162323786452017148800
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OFFSET
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0,2
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LINKS
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FORMULA
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a(n) = 31^n * Hermite(n, 19/31).
a(n+2) = 38*a(n+1) - 1922*(n+1)*a(n)
E.g.f.: exp(38*x - 961*x^2).
a(n) = numerator(Sum_{k=0..floor(n/2)} (-1)^k*n!*(38/31)^(n-2*k)/(k!*(n-2*k)!)). (End)
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EXAMPLE
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Numerators of 1, 38/31, -478/961, -164236/29791, -3484820/923521, ...
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MATHEMATICA
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Numerator[HermiteH[Range[0, 20], 19/31]] (* Harvey P. Dale, Dec 26 2017 *)
Table[31^n*HermiteH[n, 19/31], {n, 0, 30}] (* G. C. Greubel, Oct 04 2018 *)
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PROG
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(PARI) x='x+O('x^30); Vec(serlaplace(exp(38*x - 961*x^2))) \\ G. C. Greubel, Oct 04 2018
(Magma) [Numerator((&+[(-1)^k*Factorial(n)*(38/31)^(n-2*k)/( Factorial(k) *Factorial(n-2*k)): k in [0..Floor(n/2)]])): n in [0..30]]; // G. C. Greubel, Oct 04 2018
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CROSSREFS
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KEYWORD
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sign,frac
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AUTHOR
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STATUS
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approved
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