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 A062299 #17 Apr 11 2021 16:12:01
%S A062299 0,0,1,1,1,2,2,2,3,3,3,4,4,4,5,5,5,5,6,6,6,7,7,7,8,8,8,9,9,9,10,10,10,
%T A062299 11,11,11,12,12,12,13,13,13,13,14,14,14,15,15,15,16,16,16,17,17,17,18,
%U A062299 18,18,19,19,19,20,20,20,20,21,21,21,22,22,22,23,23,23,24,24,24,25,25
%N A062299 a(n) = floor(cot(Pi/(n+1))).
%H A062299 Harry J. Smith, <a href="/A062299/b062299.txt">Table of n, a(n) for n = 1..1000</a>
%e A062299 a(999) = 318 as cot(Pi/1000) = 318.308838985550445921686695436921...
%o A062299 (PARI) v=[]; for(n=1,200,v=concat(v,floor(cotan(Pi/(n+1))))); v
%o A062299 (PARI) { default(realprecision, 50); for (n=1, 1000, write("b062299.txt", n, " ", floor(cotan(Pi/(n+1)))) ) } \\ _Harry J. Smith_, Aug 04 2009
%K A062299 nonn
%O A062299 1,6
%A A062299 _Amarnath Murthy_, Jun 19 2001
%E A062299 More terms from _Jason Earls_, Jun 21 2001
%E A062299 Corrected by _T. D. Noe_, Nov 01 2006