OFFSET
0,3
COMMENTS
The expansion of x(1+kx)/((1-x^2)(1-kx^2)) has a(n)=k^((n+1)/2)/(2(sqrt(k)-1))-(-sqrt(k))^(n+1)/(2(sqrt(k)+1))-(-1)^n/2-(k+1)/(2(k-1))
LINKS
Index entries for linear recurrences with constant coefficients, signature (0,101,0,-100).
FORMULA
a(n)=2^n*5^(n+1)((-1)^n/11+1/9)-(-1)^n/2-101/198
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Paul Barry, Apr 22 2004
STATUS
approved