A037555 Base 6 digits are, in order, the first n terms of the periodic sequence with initial period 2,1,1.

2, 13, 79, 476, 2857, 17143, 102860, 617161, 3702967, 22217804, 133306825, 799840951, 4799045708, 28794274249, 172765645495, 1036593872972, 6219563237833, 37317379426999, 223904276561996, 1343425659371977

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

Mathematica

Module[{nn=20, c}, c=PadRight[{}, nn, {2, 1, 1}]; Table[FromDigits[Take[c, n], 6], {n, nn}]] (* Harvey P. Dale, Jul 23 2012 *)

Crossrefs

Sequence in context: A090187 A212390 A198849 * A135167 A271475 A037491

Adjacent sequences: A037552 A037553 A037554 * A037556 A037557 A037558

Keyword

nonn,base,easy

Author

Clark Kimberling

Status

approved