OFFSET
0,2
COMMENTS
Let ((1 + k*x)/(1 - k*x))^(m/k) = a(0) + a(1)*x + a(2)*x^2 + ...
Then n*a(n) = 2*m*a(n-1) + k^2*(n-2)*a(n-2) for n > 1.
LINKS
Seiichi Manyama, Table of n, a(n) for n = 0..1000
FORMULA
n*a(n) = 4*a(n-1) + 4^2*(n-2)*a(n-2) for n > 1.
a(n) = 2^n * A063886(n).
PROG
(PARI) N=66; x='x+O('x^N); Vec(((1+4*x)/(1-4*x))^(1/2))
CROSSREFS
KEYWORD
nonn
AUTHOR
Seiichi Manyama, May 22 2018
STATUS
approved