OFFSET
0,1
LINKS
Index entries for linear recurrences with constant coefficients, signature (8, -28, 56, -70, 56, -28, 8, -1).
FORMULA
a(0)=2187, a(1)=170859375, a(2)=10460353203, a(3)=137231006679, a(4)=897410677851, a(5)=3938980639167, a(6)=13348388671875, a(7)=37725479487783, a(n)=8*a(n-1)-28*a(n-2)+56*a(n-3)-70*a(n-4)+56*a(n-5)- 28*a(n-6)+ 8*a(n-7)-a(n-8). - Harvey P. Dale, Sep 12 2015
MATHEMATICA
(12*Range[0, 20]+3)^7 (* or *) LinearRecurrence[{8, -28, 56, -70, 56, -28, 8, -1}, {2187, 170859375, 10460353203, 137231006679, 897410677851, 3938980639167, 13348388671875, 37725479487783}, 20] (* Harvey P. Dale, Sep 12 2015 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
STATUS
approved