OFFSET
0,2
LINKS
FORMULA
a(n)= +12*a(n-2). G.f.: ( -1-2*x ) / ( -1+12*x^2 ). [R. J. Mathar, Apr 26 2010]
MATHEMATICA
LinearRecurrence[{0, 12}, {1, 2}, 30] (* Paolo Xausa, Jan 29 2024 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Paul Curtz, Apr 24 2010
EXTENSIONS
a(21)-a(27) from Paolo Xausa, Jan 29 2024
STATUS
approved