OFFSET
0,2
LINKS
Harvey P. Dale, Table of n, a(n) for n = 0..1000
Index entries for linear recurrences with constant coefficients, signature (18, -107, 258, -216).
FORMULA
a(n) = -4*2^n/7 +9*3^n/2 -32*4^n/5 +243*9^n/70. - R. J. Mathar, Jun 30 2013
MATHEMATICA
CoefficientList[Series[1/((1-2x)(1-3x)(1-4x)(1-9x)), {x, 0, 30}], x] (* or *) LinearRecurrence[{18, -107, 258, -216}, {1, 18, 217, 2238}, 30] (* Harvey P. Dale, Dec 14 2023 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
STATUS
approved