A037563 Base 6 digits are, in order, the first n terms of the periodic sequence with initial period 2,2,1.

2, 14, 85, 512, 3074, 18445, 110672, 664034, 3984205, 23905232, 143431394, 860588365, 5163530192, 30981181154, 185887086925, 1115322521552, 6691935129314, 40151610775885, 240909664655312, 1445457987931874

Offset

1,1

Links

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

Index entries for linear recurrences with constant coefficients, signature (6,0,1,-6).

Formula

G.f.: x*(2+2*x+x^2) / ( (x-1)*(6*x-1)*(1+x+x^2) ). - R. J. Mathar, Apr 30 2015

Mathematica

Table[FromDigits[PadRight[{}, n, {2, 2, 1}], 6], {n, 20}] (* or *) LinearRecurrence[{6, 0, 1, -6}, {2, 14, 85, 512}, 20] (* Harvey P. Dale, Mar 14 2023 *)

Crossrefs

Sequence in context: A361552 A036692 A075140 * A005610 A065355 A162478

Adjacent sequences: A037560 A037561 A037562 * A037564 A037565 A037566

Keyword

nonn,base,easy

Author

Clark Kimberling

Status

approved