A037784 Base 9 digits are, in order, the first n terms of the periodic sequence with initial period 3,1,2,0.

3, 28, 254, 2286, 20577, 185194, 1666748, 15000732, 135006591, 1215059320, 10935533882, 98419804938, 885778244445, 7972004200006, 71748037800056, 645732340200504, 5811591061804539

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

Sequence in context: A321385 A037777 A037665 * A037588 A307885 A076723

Adjacent sequences: A037781 A037782 A037783 * A037785 A037786 A037787

Keyword

nonn,base,easy

Author

Clark Kimberling

Status

approved