cp's OEIS Frontend

A159649 Numerator of Hermite(n, 11/19).

%I A159649 #24 Sep 08 2022 08:45:44
%S A159649 1,22,-238,-37004,-298580,100298792,3284447224,-362236528016,
%T A159649 -24568799886448,1551764588318560,193786882605147424,
%U A159649 -6940428910346759872,-1691744857677709558592,22913489210334717241984,16382813996790345696268160,128812358991324283435925248
%N A159649 Numerator of Hermite(n, 11/19).
%H A159649 Vincenzo Librandi, <a href="/A159649/b159649.txt">Table of n, a(n) for n = 0..200</a>
%H A159649 DLMF <a href="https://dlmf.nist.gov/18.9">Digital library of mathematical functions</a>, Table 18.9.1 for H_n(x)
%F A159649 D-finite with recurrence a(n) - 22*a(n-1) + 722*(n-1)*a(n-2) = 0. [DLMF] - _R. J. Mathar_, Feb 16 2014
%F A159649 From _G. C. Greubel_, Jul 11 2018: (Start)
%F A159649 a(n) = 19^n * Hermite(n, 11/19).
%F A159649 E.g.f.: exp(22*x - 361*x^2).
%F A159649 a(n) = numerator(Sum_{k=0..floor(n/2)} (-1)^k*n!*(22/19)^(n-2*k)/(k!*(n-2*k)!)). (End)
%e A159649 Numerator of 1, 22/19, -238/361, -37004/6859, -298580/130321, 100298792/2476099, ...
%p A159649 A159649 := proc(n)
%p A159649         orthopoly[H](n,11/19) ;
%p A159649         numer(%) ;
%p A159649 end proc: # _R. J. Mathar_, Feb 16 2014
%t A159649 Numerator[Table[HermiteH[n, 11/19], {n, 0, 30}]] (* _Vladimir Joseph Stephan Orlovsky_, Jun 16 2011 *)
%t A159649 Table[19^n*HermiteH[n, 11/19], {n, 0, 50}] (* _G. C. Greubel_, Jul 11 2018 *)
%o A159649 (PARI) a(n)=numerator(polhermite(n,11/19)) \\ _Charles R Greathouse IV_, Jan 29 2016
%o A159649 (Magma) [Numerator((&+[(-1)^k*Factorial(n)*(22/19)^(n-2*k)/( Factorial(k) *Factorial(n-2*k)): k in [0..Floor(n/2)]])): n in [0..30]]; // _G. C. Greubel_, Jul 11 2018
%Y A159649 Cf. A001029 (denominators).
%K A159649 sign,frac
%O A159649 0,2
%A A159649 _N. J. A. Sloane_, Nov 12 2009