login
A037504
Base-3 digits are, in order, the first n terms of the periodic sequence with initial period 1,2,0.
2
1, 5, 15, 46, 140, 420, 1261, 3785, 11355, 34066, 102200, 306600, 919801, 2759405, 8278215, 24834646, 74503940, 223511820, 670535461, 2011606385, 6034819155, 18104457466, 54313372400, 162940117200, 488820351601
OFFSET
1,2
FORMULA
G.f.: x*(1+2*x) / ( (x-1)*(3*x-1)*(1+x+x^2) ). - R. J. Mathar, Apr 27 2015
MATHEMATICA
Module[{nn=30, d}, d=PadRight[{}, nn, {1, 2, 0}]; Table[FromDigits[Take[d, n], 3], {n, nn}]] (* or *) LinearRecurrence[{3, 0, 1, -3}, {1, 5, 15, 46}, 30] (* Harvey P. Dale, Apr 25 2015 *)
CROSSREFS
Sequence in context: A058425 A079798 A344814 * A197237 A307242 A296545
KEYWORD
nonn,base,easy
STATUS
approved