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 A127761 #11 Jul 26 2020 09:05:07
%S A127761 1,10,55,193,520,1180,2375,4368,7496,12177,18913,28301,41040,57936,
%T A127761 79912,108011,143406,187403,241453,307153,386256,480675,592494,723966,
%U A127761 877529,1055804,1261606,1497950,1768053,2075346,2423475,2816310,3257951
%N A127761 Integer part of Gauss's Arithmetic-Geometric Mean M(1,n^5).
%F A127761 a(n) ~ Pi*n^5/(10*log(n) + 4*log(2)). - _Vaclav Kotesovec_, May 09 2016
%t A127761 Table[Floor[ArithmeticGeometricMean[1, n^5]], {n, 1, 100}]
%Y A127761 Cf. A127758, A127759, A127760.
%K A127761 nonn
%O A127761 1,2
%A A127761 _Artur Jasinski_, Jan 28 2007