OFFSET
0,2
LINKS
Index entries for linear recurrences with constant coefficients, signature (15,-80,180,-144).
FORMULA
a(n) = -2^n +9*3^n -16*4^n +9*6^n. - R. J. Mathar, Jun 30 2013
a(n) = 15*a(n-1)-80*a(n-2)+180*a(n-3)-144*a(n-4). - Vincenzo Librandi, Jul 03 2015
a(n) = 3^n - 2^n + 10*a(n-1)-24*a(n-2). - Vincenzo Librandi, Jul 03 2015
MATHEMATICA
LinearRecurrence[{15, -80, 180, -144}, {1, 15, 145, 1155}, 50] (* Vincenzo Librandi, Jul 03 2015 *)
CoefficientList[Series[1/((1-2x)(1-3x)(1-4x)(1-6x)), {x, 0, 30}], x] (* Harvey P. Dale, Aug 21 2021 *)
PROG
(PARI) Vec(1/((1-2*x)*(1-3*x)*(1-4*x)*(1-6*x)) + O(x^30)) \\ Michel Marcus, Jul 03 2015
CROSSREFS
KEYWORD
nonn
AUTHOR
STATUS
approved