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A127759
Integer part of Gauss's Arithmetic-Geometric Mean M(1,n^3).
9
1, 3, 9, 18, 31, 50, 74, 105, 143, 189, 243, 307, 380, 463, 557, 663, 780, 910, 1054, 1211, 1382, 1569, 1770, 1988, 2222, 2473, 2742, 3029, 3334, 3659, 4003, 4368, 4753, 5159, 5587, 6038, 6511, 7008, 7528, 8072, 8642, 9236, 9857, 10503, 11177, 11877
OFFSET
1,2
FORMULA
a(n) ~ Pi*n^3/(6*log(n) + 4*log(2)). - Vaclav Kotesovec, May 09 2016
MATHEMATICA
Table[Floor[ArithmeticGeometricMean[1, n^3]], {n, 1, 100}]
CROSSREFS
KEYWORD
nonn
AUTHOR
Artur Jasinski, Jan 28 2007
STATUS
approved