OFFSET
0,2
LINKS
Index entries for linear recurrences with constant coefficients, signature (3, -3, -1, 2).
FORMULA
a(0)=1, a(1)=3, a(2)=6, a(3)=8, a(n)=3*a(n-1)-3*a(n-2)-a(n-3)+2*a(n-4). - Harvey P. Dale, Mar 07 2013
MATHEMATICA
CoefficientList[Series[(1/(1-x))/(1-2x+x^2+2x^3), {x, 0, 50}], x] (* or *) LinearRecurrence[{3, -3, -1, 2}, {1, 3, 6, 8}, 50] (* Harvey P. Dale, Mar 07 2013 *)
CROSSREFS
KEYWORD
sign
AUTHOR
N. J. A. Sloane, Nov 17 2002
STATUS
approved