OFFSET
0,2
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..200
Index entries for linear recurrences with constant coefficients, signature (22,-155,398,-264).
FORMULA
a(n) = (3*11^(n+3) - 21*6^(n+3) + 25*4^(n+3) - 7)/1050. [Yahia Kahloune, Jul 05 2013]
MATHEMATICA
CoefficientList[Series[1 / ((1 - x) (1 - 4 x) (1 - 6 x) (1 - 11 x)), {x, 0, 20}], x] (* Vincenzo Librandi, Jul 11 2013 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
STATUS
approved