OFFSET
1,1
LINKS
Index entries for linear recurrences with constant coefficients, signature (10,-10,10,-9).
FORMULA
G.f.: x*(2+x) / ( (x-1)*(9*x-1)*(x^2+1) ). - R. J. Mathar, May 04 2015
MATHEMATICA
Table[FromDigits[PadRight[{}, n, {2, 3, 1, 0}], 9], {n, 20}] (* or *) LinearRecurrence[ {10, -10, 10, -9}, {2, 21, 190, 1710}, 20] (* Harvey P. Dale, Jan 15 2017 *)
CROSSREFS
KEYWORD
nonn,base,easy
AUTHOR
STATUS
approved