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Integer part of Gauss's Arithmetic-Geometric Mean M(2,n^3).
4

%I #11 Jul 26 2020 09:06:26

%S 1,4,10,20,35,55,82,116,157,206,265,333,411,500,601,714,839,978,1130,

%T 1298,1480,1678,1892,2123,2371,2637,2922,3225,3548,3892,4256,4641,

%U 5047,5477,5928,6404,6903,7426,7974,8548,9148,9774,10427,11108,11816,12553

%N Integer part of Gauss's Arithmetic-Geometric Mean M(2,n^3).

%F a(n) ~ Pi*n^3/(6*log(n) + 2*log(2)). - _Vaclav Kotesovec_, May 09 2016

%t Table[Floor[ArithmeticGeometricMean[2, n^3]], {n, 1, 100}]

%Y Cf. A127758, A127759, A127760, A127761, A127762, A127763, A127765, A127766.

%K nonn

%O 1,2

%A _Artur Jasinski_, Jan 28 2007