This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A212448 #18 Sep 08 2022 08:46:02
%S A212448 5,10,14,18,22,27,31,35,39,43,47,51,55,60,64,68,72,76,80,84,88,92,96,
%T A212448 100,104,108,112,116,120,124,128,132,136,140,144,148,152,157,161,165,
%U A212448 169,173,177,181,185,189,193,197,201,205,209,213,217,221,225,229
%N A212448 Floor(4n + log(4n)).
%H A212448 Vincenzo Librandi, <a href="/A212448/b212448.txt">Table of n, a(n) for n = 1..1000</a>
%t A212448 Table[Floor[4*n + Log[4*n]], {n, 100}] (* _T. D. Noe_, May 21 2012 *)
%o A212448 (Magma) [Floor(4*n + Log(4*n)): n in [1..80]]; // _Vincenzo Librandi_, Feb 14 2013
%o A212448 (PARI) a(n)=4*n+log(4*n)\1 \\ _Charles R Greathouse IV_, Sep 04 2015
%Y A212448 Cf. A000523, A062153, A102572, A212445, A212446, A212447, A212449, A212450, A212451, A212452, A212453, A212454.
%K A212448 nonn,easy
%O A212448 1,1
%A A212448 _Mohammad K. Azarian_, May 17 2012