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!)
A163206 a(n) = 20*a(n-1) - 92*a(n-2) for n > 1; a(0) = 1, a(1) = 10. 1

%I #9 Sep 08 2022 08:45:46

%S 1,10,108,1240,14864,183200,2296512,29075840,370237696,4729776640,

%T 60533664768,775533844480,9941579730944,127482480926720,

%U 1635024283287552,20972097420492800,269019714347401216,3450961324262686720,44269412765292822528,567899813473689272320

%N a(n) = 20*a(n-1) - 92*a(n-2) for n > 1; a(0) = 1, a(1) = 10.

%C Binomial transform of A152267. Tenth binomial transform of powers of 8 interleaved with zeros.

%H G. C. Greubel, <a href="/A163206/b163206.txt">Table of n, a(n) for n = 0..900</a>

%H <a href="/index/Rec#order_02">Index entries for linear recurrences with constant coefficients</a>, signature (20,-92).

%F a(n) = ((10+sqrt(8))^n + (10-sqrt(8))^n)/2.

%F G.f.: (1-10*x)/(1-20*x+92*x^2).

%t LinearRecurrence[{20, -92}, {1, 10}, 50] (* or *) Table[((10+Sqrt[8])^n + (10-Sqrt[8])^n)/2,{n,0,25}] (* _G. C. Greubel_, Dec 10 2016 *)

%o (Magma) [ n le 2 select 9*n-8 else 20*Self(n-1)-92*Self(n-2): n in [1..17] ];

%o (PARI) Vec((1-10*x)/(1-20*x+92*x^2) + O(x^50)) \\ _G. C. Greubel_, Dec 10 2016

%Y Cf. A152267, A001018 (powers of 8).

%K nonn,easy

%O 0,2

%A _Klaus Brockhaus_, Jul 28 2009

%E Terms a(18) - a(20) added by _G. C. Greubel_, Dec 10 2016

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 6 04:28 EDT 2024. Contains 373115 sequences. (Running on oeis4.)