A037573 Base 8 digits are, in order, the first n terms of the periodic sequence with initial period 2,1,2.

2, 17, 138, 1106, 8849, 70794, 566354, 4530833, 36246666, 289973330, 2319786641, 18558293130, 148466345042, 1187730760337, 9501846082698, 76014768661586, 608118149292689, 4864945194341514

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+2*x^2) / ( (x-1)*(8*x-1)*(1+x+x^2) ). - R. J. Mathar, Apr 26 2015

Mathematica

Table[FromDigits[PadRight[{}, n, {2, 1, 2}], 8], {n, 20}] (* or *) LinearRecurrence[ {8, 0, 1, -8}, {2, 17, 138, 1106}, 20] (* Harvey P. Dale, Jun 22 2017 *)

Crossrefs

Sequence in context: A037557 A026941 A037493 * A037741 A037636 A163066

Adjacent sequences: A037570 A037571 A037572 * A037574 A037575 A037576

Keyword

nonn,base,easy

Author

Clark Kimberling

Status

approved