|
|
A159868
|
|
Numerator of Hermite(n, 4/23).
|
|
1
|
|
|
1, 8, -994, -24880, 2955916, 128939488, -14605279736, -935350107712, 100683900863120, 8722274518579328, -888933907869994016, -99393135669529242368, 9550267734434756419264, 1338297392335821312458240, -120648003280729069290891136, -20788045001524017834458579968
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
0,2
|
|
LINKS
|
|
|
FORMULA
|
a(n) = 23^n * Hermite(n, 4/23).
E.g.f.: exp(8*x - 529*x^2).
a(n) = numerator(Sum_{k=0..floor(n/2)} (-1)^k*n!*(8/23)^(n-2*k)/(k!*(n-2*k)!)). (End)
|
|
MATHEMATICA
|
Table[19^n*HermiteH[n, 4/23], {n, 0, 30}] (* G. C. Greubel, Jul 14 2018 *)
|
|
PROG
|
(PARI) x='x+O('x^30); Vec(serlaplace(exp(8*x - 529*x^2))) \\ G. C. Greubel, Jul 14 2018
(Magma) [Numerator((&+[(-1)^k*Factorial(n)*(8/23)^(n-2*k)/( Factorial(k) *Factorial(n-2*k)): k in [0..Floor(n/2)]])): n in [0..30]]; // G. C. Greubel, Jul 14 2018
|
|
CROSSREFS
|
|
|
KEYWORD
|
sign,frac
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|