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%I #11 Jul 13 2013 12:01:49
%S 0,2,5,14,21,41,59,89,117,171,209,286,347,432,516,651,744,914,1042,
%T 1219,1382,1634,1806,2091,2323,2629,2895,3300,3562,4026,4386,4843,
%U 5249,5802,6204,6869,7380,8025,8569,9388,9928,10830,11516,12347,13104
%N Number of ordered triples of integers from [ 2,n ] with no global factor.
%H Reinhard Zumkeller, <a href="/A015633/b015633.txt">Table of n, a(n) for n = 2..250</a>
%o (Haskell)
%o a015633 n = length [(x,y,z) | x <- [2..n], y <- [x..n], z <- [y..n],
%o gcd (gcd x y) z == 1]
%o -- _Reinhard Zumkeller_, Nov 28 2011
%K nonn
%O 2,2
%A _Olivier Gérard_
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