OFFSET
0,3
LINKS
FORMULA
G.f.: (1-6*x-36*x^2)/(1-7*x-36*x^2).
MATHEMATICA
LinearRecurrence[{7, 36}, {1, 1, 7}, 25] (* Paolo Xausa, Jan 29 2024 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Philippe Deléham, Jan 22 2009
STATUS
approved