A037728 Base 9 digits are, in order, the first n terms of the periodic sequence with initial period 2,0,3,1.

2, 18, 165, 1486, 13376, 120384, 1083459, 9751132, 87760190, 789841710, 7108575393, 63977178538, 575794606844, 5182151461596, 46639363154367, 419754268389304, 3777788415503738

Offset

1,1

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*(2+3*x^2+x^3) ) / ( (x-1)*(9*x-1)*(1+x)*(x^2+1) ). - R. J. Mathar, Oct 14 2015

Crossrefs

Sequence in context: A245998 A005260 A183250 * A037623 A052865 A052883

Adjacent sequences: A037725 A037726 A037727 * A037729 A037730 A037731

Keyword

nonn,base

Author

Clark Kimberling

Status

approved