A037557 - OEIS

A037557

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

2, 17, 137, 1098, 8785, 70281, 562250, 4498001, 35984009, 287872074, 2302976593, 18423812745, 147390501962, 1179124015697, 9432992125577, 75463937004618, 603711496036945, 4829691968295561

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

MATHEMATICA

Table[FromDigits[PadRight[{}, n, {2, 1, 1}], 8], {n, 20}] (* or *) LinearRecurrence[ {8, 0, 1, -8}, {2, 17, 137, 1098}, 20] (* Harvey P. Dale, Apr 15 2018 *)

CROSSREFS

Sequence in context: A037734 A201782 A132433 * A026941 A037493 A037573

Adjacent sequences: A037554 A037555 A037556 * A037558 A037559 A037560

KEYWORD

nonn,base,easy

AUTHOR

Clark Kimberling

STATUS

approved