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 A127765 #11 Jul 26 2020 09:07:00
%S A127765 1,7,25,64,137,258,444,714,1086,1586,2236,3063,4096,5364,6899,8736,
%T A127765 10909,13455,16414,19826,23734,28181,33212,38876,45221,52297,60158,
%U A127765 68856,78447,88988,100537,113155,126903,141845,158045,175570,194487
%N A127765 Integer part of Gauss's Arithmetic-Geometric Mean M(2,n^4).
%F A127765 a(n) ~ Pi*n^4/(8*log(n) + 2*log(2)). - _Vaclav Kotesovec_, May 09 2016
%t A127765 Table[Floor[ArithmeticGeometricMean[2, n^4]], {n, 1, 100}]
%Y A127765 Cf. A127758, A127759, A127760, A127761, A127762, A127763, A127764, A127766.
%K A127765 nonn
%O A127765 1,2
%A A127765 _Artur Jasinski_, Jan 28 2007