OFFSET
0,2
LINKS
Index entries for linear recurrences with constant coefficients, signature (33,-398,2088,-4032)
FORMULA
a(n) = 20*a(n-1) - 96*a(n-2) + 7^(n+1) - 6^(n+1), n >= 2. - Vincenzo Librandi, Mar 13 2011
a(n) = -8^(n+2) - 3*6^(n+1) + 6*12^(n+1)/5 + 7^(n+3)/5. - R. J. Mathar, Mar 14 2011
MATHEMATICA
CoefficientList[Series[1/((1-6x)(1-7x)(1-8x)(1-12x)), {x, 0, 20}], x] (* or *) LinearRecurrence[{33, -398, 2088, -4032}, {1, 33, 691, 11757}, 20] (* Harvey P. Dale, Nov 09 2014 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
STATUS
approved