OFFSET
0,3
LINKS
Index entries for linear recurrences with constant coefficients, signature (6,-12,8).
FORMULA
a(n)=n(3n - 1)2^(n - 2).
O.g.f.: -x*(1+4*x)/(-1+2*x)^3. - R. J. Mathar, Apr 02 2008
MATHEMATICA
LinearRecurrence[{6, -12, 8}, {0, 1, 10}, 30] (* Harvey P. Dale, Dec 28 2019 *)
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Paul Barry, Jun 09 2003
STATUS
approved