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 A159280 Numerator of Hermite(n, 1/11). 25
 1, 2, -238, -1444, 169900, 1737592, -202103816, -2927191216, 336509481872, 6340061157920, -720237529201376, -16783423060569152, 1883705456612924608, 52506471481118666624, -5821124423542023483520, -189534174225114089489152, 20751613309007317066199296 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS T. D. Noe, Table of n, a(n) for n = 0..100 FORMULA From G. C. Greubel, Jun 08 2018: (Start) a(n) = 11^n * Hermite(n,1/11). E.g.f.: exp(2*x-121*x^2). a(n) = Sum_{k=0..floor(n/2)} (-1)^k*n!*(2/11)^(n-2k)/(k!*(n-2k)!). (End) MATHEMATICA Numerator[Table[HermiteH[n, 1/11], {n, 0, 50}]] (* Vladimir Joseph Stephan Orlovsky, Apr 12 2011 *) PROG (PARI) a(n)=polhermite(n, 1/11)*11^n \\ Charles R Greathouse IV, Jun 20 2012 (PARI) a(n)=numerator(polhermite(n, 1/11)) \\ G. C. Greubel, Jun 08 2018 (Python) from sympy import hermite def a(n): return hermite(n, 1/11)*11**n # Indranil Ghosh, May 26 2017 (MAGMA) [Numerator((&+[(-1)^k*Factorial(n)*(2/22)^(n-2*k)/( Factorial(k) *Factorial(n-2*k)): k in [0..Floor(n/2)]])): n in [0..30]]; // G. C. Greubel, Jun 08 2018 CROSSREFS The denominators are A001020. Sequence in context: A139963 A124046 A101146 * A013477 A013473 A212839 Adjacent sequences:  A159277 A159278 A159279 * A159281 A159282 A159283 KEYWORD sign,frac AUTHOR N. J. A. Sloane, Nov 12 2009 STATUS approved

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Last modified September 22 10:15 EDT 2020. Contains 337289 sequences. (Running on oeis4.)