OFFSET
1,1
LINKS
Index entries for linear recurrences with constant coefficients, signature (3,0,1,-3)
FORMULA
G.f.: x*(2+x+x^2) / ( (x-1)*(3*x-1)*(1+x+x^2) ). - R. J. Mathar, Nov 21 2011
MATHEMATICA
With[{nn=30}, Table[FromDigits[PadRight[{}, n, {2, 1, 1}], 3], {n, nn}]] (* or *) LinearRecurrence[{3, 0, 1, -3}, {2, 7, 22, 68}, 30] (* Harvey P. Dale, Sep 06 2016 *)
CROSSREFS
KEYWORD
nonn,base
AUTHOR
STATUS
approved