OFFSET
0,4
LINKS
FORMULA
G.f.: (1-x-4x^2)/((1+2x)(1-2x-x^2)). [R. J. Mathar, Feb 07 2009]
MATHEMATICA
LinearRecurrence[{0, 5, 2}, {1, -1, 1}, 35] (* Paolo Xausa, Jan 29 2024 *)
CROSSREFS
KEYWORD
sign,easy
AUTHOR
Paul Curtz, Mar 02 2008
EXTENSIONS
More terms from R. J. Mathar, Feb 07 2009
a(30)-a(31) from Paolo Xausa, Jan 29 2024
STATUS
approved