A037665 Base 9 digits are, in order, the first n terms of the periodic sequence with initial period 3,1,0.

3, 28, 252, 2271, 20440, 183960, 1655643, 14900788, 134107092, 1206963831, 10862674480, 97764070320, 879876632883, 7918889695948, 71270007263532, 641430065371791, 5772870588346120, 51955835295115080, 467602517656035723, 4208422658904321508

Offset

1,1

Links

Table of n, a(n) for n=1..20.

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

Formula

G.f.: x*(3+x) / ( (x-1)*(9*x-1)*(1+x+x^2) ). - R. J. Mathar, Apr 30 2015

Mathematica

Table[FromDigits[PadRight[{}, n, {3, 1, 0}], 9], {n, 30}] (* Harvey P. Dale, Apr 29 2018 *)

Crossrefs

Sequence in context: A323959 A321385 A037777 * A037784 A037588 A307885

Adjacent sequences: A037662 A037663 A037664 * A037666 A037667 A037668

Keyword

nonn,base,easy

Author

Clark Kimberling

Extensions

More terms from Harvey P. Dale, Apr 29 2018

Status

approved