OFFSET
0,2
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..200
Index entries for linear recurrences with constant coefficients, signature (26, -227, 730, -528).
FORMULA
a(n) = (7*11^(n+3) - 25*8^(n+3) + 21*6^(n+3) - 3)/1050. [Yahia Kahloune, Jun 29 2013]
MATHEMATICA
CoefficientList[Series[1 / ((1 - x) (1 - 6 x) (1 - 8 x) (1 - 11 x)), {x, 0, 20}], x] (* Vincenzo Librandi, Jul 16 2013 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
STATUS
approved