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 A127757 #9 Jun 06 2016 22:23:03
%S A127757 1,1,1,2,2,2,3,3,3,4,4,4,5,5,5,6,6,6,6,7,7,7,7,8,8,8,9,9,9,9,10,10,10,
%T A127757 10,11,11,11,11,12,12,12,12,13,13,13,13,14,14,14,14,15,15,15,15,16,16,
%U A127757 16,16,16,17,17,17,17,18,18,18,18,19,19,19,19,19,20,20,20,20,21,21,21
%N A127757 Integer part of Gauss' Arithmetic-Geometric Mean M(1,n).
%F A127757 a(n) ~ Pi*n/(2*log(n) + 4*log(2)). - _Vaclav Kotesovec_, May 09 2016
%t A127757 Table[Floor[ArithmeticGeometricMean[1, n]], {n, 1, 100}]
%Y A127757 Cf. A127758, A127759, A127760, A127761.
%K A127757 nonn
%O A127757 1,4
%A A127757 _Artur Jasinski_, Jan 28 2007