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!)
A212457 a(n) = floor(4n*log(4n)). 8

%I #22 Jan 20 2024 11:27:40

%S 5,16,29,44,59,76,93,110,129,147,166,185,205,225,245,266,286,307,329,

%T 350,372,394,416,438,460,483,505,528,551,574,597,621,644,668,691,715,

%U 739,763,787,812,836,860,885,910,934

%N a(n) = floor(4n*log(4n)).

%H Vincenzo Librandi, <a href="/A212457/b212457.txt">Table of n, a(n) for n = 1..1000</a>

%t Table[Floor[4*n*Log[4*n]], {n, 80}] (* _Vincenzo Librandi_, Feb 13 2013 *)

%o (Derive) PROG(y := [], x := 100, LOOP(IF(x = 0, RETURN y), y := ADJOIN(FLOOR(4·x·LOG(4·x)), y), x := x - 1))

%o (Magma) [Floor(4*n*Log(4*n)): n in [1..80]]; // _Vincenzo Librandi_, Feb 13 2013

%o (PARI) a(n)=4*n*log(4*n)\1 \\ _Charles R Greathouse IV_, Sep 04 2015

%Y Cf. A050502, A050504, A212455, A212456, A212458, A212459, A212460, A212461, A212462.

%K easy,nonn

%O 1,1

%A _Mohammad K. Azarian_, May 31 2012

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 April 23 02:23 EDT 2024. Contains 371906 sequences. (Running on oeis4.)