OFFSET
0,2
LINKS
Andrew Howroyd, Table of n, a(n) for n = 0..500
Index entries for linear recurrences with constant coefficients, signature (12,-6).
FORMULA
G.f.: (1 - 6*x)/(1 - 12*x + 6*x^2).
MATHEMATICA
LinearRecurrence[{12, -6}, {1, 6}, 25] (* Paolo Xausa, Jan 04 2024 *)
PROG
(PARI) Vec((1 - 6*x)/(1 - 12*x + 6*x^2) + O(x^25)) \\ Andrew Howroyd, Apr 13 2021
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Philippe Deléham, Sep 09 2009
EXTENSIONS
Terms a(11) and beyond from Andrew Howroyd, Apr 13 2021
STATUS
approved