A037686 Base 9 digits are, in order, the first n terms of the periodic sequence with initial period 1,0,3,2.

1, 9, 84, 758, 6823, 61407, 552666, 4973996, 44765965, 402893685, 3626043168, 32634388514, 293709496627, 2643385469643, 23790469226790, 214114223041112, 1927028007370009

Offset

1,2

Links

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

Index entries for linear recurrences with constant coefficients, signature (9,0,0,1,-9).

Formula

G.f.: ( x*(1+3*x^2+2*x^3) ) / ( (x-1)*(9*x-1)*(1+x)*(x^2+1) ). - R. J. Mathar, Oct 11 2015

Mathematica

Table[FromDigits[PadRight[{}, n, {1, 0, 3, 2}], 9], {n, 20}] (* Harvey P. Dale, Feb 05 2019 *)

Crossrefs

Sequence in context: A203455 A272582 A037595 * A181353 A385251 A370029

Adjacent sequences: A037683 A037684 A037685 * A037687 A037688 A037689

Keyword

nonn,base,easy

Author

Clark Kimberling

Status

approved