A037777 Base 9 digits are, in order, the first n terms of the periodic sequence with initial period 3,1,0,2.

3, 28, 252, 2270, 20433, 183898, 1655082, 14895740, 134061663, 1206554968, 10858994712, 97730952410, 879578571693, 7916207145238, 71245864307142, 641212778764280, 5770915008878523

Offset

1,1

Links

Table of n, a(n) for n=1..17.

Index entries for linear recurrences with constant coefficients, signature (10,-10,10,-9).

Formula

G.f.: x*(3-2*x+2*x^2) / ( (x-1)*(9*x-1)*(x^2+1) ). - R. J. Mathar, May 01 2015

Mathematica

Table[FromDigits[PadRight[{}, n, {3, 1, 0, 2}], 9], {n, 20}] (* or *) LinearRecurrence[{10, -10, 10, -9}, {3, 28, 252, 2270}, 20] (* Harvey P. Dale, Sep 26 2023 *)

Crossrefs

Sequence in context: A341926 A323959 A321385 * A037665 A037784 A037588

Adjacent sequences: A037774 A037775 A037776 * A037778 A037779 A037780

Keyword

nonn,base,easy

Author

Clark Kimberling

Status

approved