OFFSET
0,2
FORMULA
G.f.: (1-25*x)^(-8/5).
a(n) = (5^n/n!) * product[ k=0..n-1 ] (5*k+8).
a(n) ~ (5/3)*Gamma(3/5)^-1*n^(3/5)*5^(2*n)*{1 + 12/25*n^-1 - ...}. - Joe Keane (jgk(AT)jgk.org), Nov 24 2001
EXAMPLE
(1-25*x)^(-8/5) = 1+40*x+1300*x^2+39000*x^3+1121250*x^4+31395000*x^5+...
MATHEMATICA
CoefficientList[Series[(1-25x)^-(8/5), {x, 0, 20}], x] (* Harvey P. Dale, May 06 2016 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Joe Keane (jgk(AT)jgk.org)
EXTENSIONS
Typo in definition corrected by N. J. A. Sloane, May 06 2016
STATUS
approved