OFFSET
1,1
LINKS
Harvey P. Dale, Table of n, a(n) for n = 1..1000
Index entries for linear recurrences with constant coefficients, signature (9,0,0,1,-9).
FORMULA
G.f.: x*(3+x+2*x^2) / ( (x-1)*(9*x-1)*(1+x)*(x^2+1) ). - R. J. Mathar, May 01 2015
MATHEMATICA
Table[FromDigits[PadRight[{}, n, {3, 1, 2, 0}], 9], {n, 20}] (* Harvey P. Dale, Dec 27 2015 *)
CROSSREFS
KEYWORD
nonn,base,easy
AUTHOR
STATUS
approved