login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A017950 Powers of sqrt(15) rounded to nearest integer. 1

%I

%S 1,4,15,58,225,871,3375,13071,50625,196070,759375,2941047,11390625,

%T 44115701,170859375,661735514,2562890625,9926032709,38443359375,

%U 148890490632,576650390625,2233357359475,8649755859375

%N Powers of sqrt(15) rounded to nearest integer.

%H Vincenzo Librandi, <a href="/A017950/b017950.txt">Table of n, a(n) for n = 0..1000</a>

%t Floor[(Sqrt[15]^Range[0,40]+1/2)] (* _Vincenzo Librandi_, Nov 19 2011 *)

%o (PARI) a(n)=round(sqrt(15)^n) \\ _Charles R Greathouse IV_, Nov 18 2011

%o (MAGMA) [Round(Sqrt(15)^n): n in [0..40]]; // _Vincenzo Librandi_, Nov 19 2011

%K nonn

%O 0,2

%A _N. J. A. Sloane_

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified November 29 18:41 EST 2021. Contains 349416 sequences. (Running on oeis4.)