A037565 Base 8 digits are, in order, the first n terms of the periodic sequence with initial period 2,2,1.

2, 18, 145, 1162, 9298, 74385, 595082, 4760658, 38085265, 304682122, 2437456978, 19499655825, 155997246602, 1247977972818, 9983823782545, 79870590260362, 638964722082898, 5111717776663185

Offset

1,1

Links

Table of n, a(n) for n=1..18.

Index entries for linear recurrences with constant coefficients, signature (8,0,1,-8).

Formula

G.f.: x*(2+2*x+x^2) / ( (x-1)*(8*x-1)*(1+x+x^2) ). - R. J. Mathar, Apr 30 2015

Mathematica

Table[FromDigits[PadRight[{}, n, {2, 2, 1}], 8], {n, 20}] (* Harvey P. Dale, Sep 08 2020 *)

Crossrefs

Sequence in context: A052640 A290215 A208654 * A329170 A125835 A356623

Adjacent sequences: A037562 A037563 A037564 * A037566 A037567 A037568

Keyword

nonn,base,easy

Author

Clark Kimberling

Status

approved