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Quadruples of different integers from [ 1,n ] with no common factors between triples.
0

%I #4 Mar 30 2012 17:20:41

%S 0,0,0,1,5,12,31,53,99,148,257,335,531,690,948,1192,1685,1977,2689,

%T 3171,3961,4651,5987,6716,8353,9539,11340,12781,15599,16945,20417,

%U 22705,26066,28814,33405,35980,42059,45966,51636,55816,64226,68205

%N Quadruples of different integers from [ 1,n ] with no common factors between triples.

%K nonn

%O 1,5

%A _Olivier GĂ©rard_