A037539 Base 6 digits are, in order, the first n terms of the periodic sequence with initial period 1,2,1.

1, 8, 49, 295, 1772, 10633, 63799, 382796, 2296777, 13780663, 82683980, 496103881, 2976623287, 17859739724, 107158438345, 642950630071, 3857703780428, 23146222682569, 138877336095415, 833264016572492, 4999584099434953

Offset

1,2

Links

Table of n, a(n) for n=1..21.

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

Formula

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

Mathematica

With[{nn=30}, Table[FromDigits[PadRight[{}, n, {1, 2, 1}], 6], {n, nn}]] (* Harvey P. Dale, Aug 25 2016 *)

Crossrefs

Sequence in context: A115598 A261668 A097204 * A037483 A188708 A317752

Adjacent sequences: A037536 A037537 A037538 * A037540 A037541 A037542

Keyword

nonn,base,easy

Author

Clark Kimberling

Status

approved