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.
The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A168037 Period length 18: repeat 0,1,2,0,8,7,0,4,5,0,5,4,0,7,8,0,2,1. 0

%I #13 Dec 12 2023 07:46:32

%S 0,1,2,0,8,7,0,4,5,0,5,4,0,7,8,0,2,1,0,1,2,0,8,7,0,4,5,0,5,4,0,7,8,0,

%T 2,1,0,1,2,0,8,7,0,4,5,0,5,4,0,7,8,0,2,1

%N Period length 18: repeat 0,1,2,0,8,7,0,4,5,0,5,4,0,7,8,0,2,1.

%C Represents also the decimal expansion of 447668335336223/37037037037037037.

%H <a href="/index/Rec#order_18">Index entries for linear recurrences with constant coefficients</a>, signature (0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1).

%F a(n) = A129194(n) mod 9.

%F a(n) = a(n-18).

%F a(n+1) = a(17-n), 0<=n<= 16, palindromic.

%F G.f. ( -x*(1+2*x+8*x^3+7*x^4+4*x^6+5*x^7+5*x^9+4*x^10+7*x^12+8*x^13+2*x^15+x^16) ) / ( (x-1)*(1+x+x^2)*(1+x^3+x^6)*(1+x)*(1-x+x^2)*(1-x^3+x^6) ). - R. J. Mathar, Jan 22 2011

%t PadRight[{},60,{0,1,2,0,8,7,0,4,5,0,5,4,0,7,8,0,2,1}] (* _Harvey P. Dale_, Jan 17 2021 *)

%Y Cf. A154811.

%K nonn,easy

%O 0,3

%A _Paul Curtz_, Nov 17 2009

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.

Last modified June 12 11:18 EDT 2024. Contains 373331 sequences. (Running on oeis4.)