OFFSET
0,2
LINKS
Index entries for linear recurrences with constant coefficients, signature (28, -267, 1008, -1296).
FORMULA
a(0)=1, a(1)=28, a(2)=517, a(3)=8008, a(n)=28*a(n-1)-267*a(n-2)+ 1008*a(n-3)-1296*a(n-4) [From Harvey P. Dale, Sep 23 2011]
a(n)=(5*12^(n+3)-12*9^(n+3)+27*4^(n+3)-20*3^(n+3))/1080. [Yahia Kahloune, Jun 07 2013]
MATHEMATICA
CoefficientList[Series[1/((1-3x)(1-4x)(1-9x)(1-12x)), {x, 0, 30}], x] (* or *) LinearRecurrence[{28, -267, 1008, -1296}, {1, 28, 517, 8008}, 31] (* Harvey P. Dale, Sep 23 2011 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
STATUS
approved