A037693 Base 9 digits are, in order, the first n terms of the periodic sequence with initial period 1,2,0,3.

1, 11, 99, 894, 8047, 72425, 651825, 5866428, 52797853, 475180679, 4276626111, 38489635002, 346406715019, 3117660435173, 28058943916557, 252530495249016, 2272774457241145

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

Mathematica

Module[{nn=20, b9}, b9=PadRight[{}, nn, {1, 2, 0, 3}]; Table[FromDigits[ Take[ b9, n], 9], {n, nn}]] (* Harvey P. Dale, Feb 28 2016 *)

Crossrefs

Sequence in context: A015671 A190870 A037510 * A098611 A090337 A287196

Adjacent sequences: A037690 A037691 A037692 * A037694 A037695 A037696

Keyword

nonn,base,easy

Author

Clark Kimberling

Status

approved