|
|
A159651
|
|
Numerator of Hermite(n, 13/19).
|
|
1
|
|
|
1, 26, -46, -38740, -907604, 88283416, 5571819256, -237576457456, -34336962413680, 479480595510176, 235588077247357216, 2663440108847816896, -1801791066668467770176, -69922612836437647611520, 15093623018002859652972416, 1099211969018786093034526976
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
0,2
|
|
LINKS
|
|
|
FORMULA
|
D-finite with recurrence a(n) -26*a(n-1) +722*(n-1)*a(n-2)=0. [DLMF] - R. J. Mathar, Feb 16 2014
a(n) = 19^n * Hermite(n, 13/19).
E.g.f.: exp(26*x - 361*x^2).
a(n) = numerator(Sum_{k=0..floor(n/2)} (-1)^k*n!*(26/19)^(n-2*k)/(k!*(n-2*k)!)). (End)
|
|
EXAMPLE
|
Numerator of 1, 26/19, -46/361, -38740/6859, -907604/130321, 88283416/2476099,..
|
|
MAPLE
|
orthopoly[H](n, 13/19) ;
numer(%) ;
|
|
MATHEMATICA
|
Table[19^n*HermiteH[n, 13/19], {n, 0, 50}] (* G. C. Greubel, Jul 11 2018 *)
|
|
PROG
|
(Magma) [Numerator((&+[(-1)^k*Factorial(n)*(26/19)^(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
|
|
CROSSREFS
|
|
|
KEYWORD
|
sign,frac
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|