OFFSET
0,4
COMMENTS
Binomial transform is A099213.
LINKS
FORMULA
G.f.: (1+2x)/(1+2x-4x^3); a(n)=-2a(n-1)+4a(n-3).
MATHEMATICA
LinearRecurrence[{-2, 0, 4}, {1, 0, 0}, 40] (* Harvey P. Dale, May 02 2019 *)
CROSSREFS
KEYWORD
easy,sign
AUTHOR
Paul Barry, Oct 06 2004
STATUS
approved