The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A033144 Base 8 digits are, in order, the first n terms of the periodic sequence with initial period 1,0,0. 2

%I #25 Jun 13 2015 00:49:12

%S 1,8,64,513,4104,32832,262657,2101256,16810048,134480385,1075843080,

%T 8606744640,68853957121,550831656968,4406653255744,35253226045953,

%U 282025808367624,2256206466940992,18049651735527937,144397213884223496,1155177711073787968

%N Base 8 digits are, in order, the first n terms of the periodic sequence with initial period 1,0,0.

%H Vincenzo Librandi, <a href="/A033144/b033144.txt">Table of n, a(n) for n = 1..200</a>

%H <a href="/index/Rec">Index entries for linear recurrences with constant coefficients</a>, signature (8,0,1,-8).

%F a(n) = 8*a(n-1) + a(n-3) - 8*a(n-4).

%F G.f.: x / ((x-1)*(8*x-1)*(x^2+x+1)). - _Colin Barker_, Apr 30 2014

%F a(n) = round( (64/511)*8^n ). - _Tani Akinari_, Jul 15 2014

%t Module[{nn=30,d},d=PadRight[{},nn,{1,0,0}];Table[FromDigits[Take[d,n],8],{n,nn}]] (* or *) LinearRecurrence[{8,0,1,-8},{1,8,64,513},50] (* _Harvey P. Dale_, Nov 13 2013 *)

%t CoefficientList[Series[1/((x - 1) (8 x - 1) (x^2 + x + 1)), {x, 0, 40}], x] (* _Vincenzo Librandi_, May 01 2014 *)

%o (PARI) Vec(x/((x-1)*(8*x-1)*(x^2+x+1)) + O(x^100)) \\ _Colin Barker_, Apr 30 2014

%K nonn,base,easy

%O 1,2

%A _Clark Kimberling_

%E More terms from _Harvey P. Dale_, Nov 13 2013

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified June 7 00:43 EDT 2024. Contains 373140 sequences. (Running on oeis4.)