A015657 - OEIS

%I #5 Mar 30 2012 17:20:41

%S 0,0,0,8,10,51,83,165,216,531,637,1284,1607,2159,2756,4705,5353,8462,

%T 9829,12378,14514,21227,23433,31079,35600,43705,49266,66390,70849,

%U 93223,104603,122139,135745,162248,173565,218847,240639,275249,297212

%N Number of ordered 5-tuples of integers from [ 2,n ] with no common factors among triples.

%K nonn

%O 2,4

%A _Olivier Gérard_