A037523 Base 6 digits are, in order, the first n terms of the periodic sequence with initial period 2,1,0.

2, 13, 78, 470, 2821, 16926, 101558, 609349, 3656094, 21936566, 131619397, 789716382, 4738298294, 28429789765, 170578738590, 1023472431542, 6140834589253, 36845007535518, 221070045213110, 1326420271278661

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+x) / ( (x-1)*(6*x-1)*(1+x+x^2) ). - R. J. Mathar, Nov 21 2011

Mathematica

Table[FromDigits[PadRight[{}, n, {2, 1, 0}], 6], {n, 20}] (* or *) LinearRecurrence[ {6, 0, 1, -6}, {2, 13, 78, 470}, 20] (* Harvey P. Dale, Jul 05 2021 *)

Crossrefs

Sequence in context: A007509 A077413 A024199 * A037732 A090187 A212390

Adjacent sequences: A037520 A037521 A037522 * A037524 A037525 A037526

Keyword

nonn,base

Author

Clark Kimberling

Status

approved