%I A015641
%S A015641 0,0,0,0,1,6,21,56,125,251,456,786,1266,1980,2946,4311,6056,8436,
%T A015641 11370,15231,19866,25851,32801,41655,51786,64366,78601,96151,115495,
%U A015641 139246,165286,196541,230681,271585,315256,367616,423461,489011
%N A015641 Number of 5-tuples of different integers from [ 2,n ] with no global 
               factor.
%Y A015641 Sequence in context: A025203 A002817 A132366 this_sequence A050190 A008498 
               A015640
%Y A015641 Adjacent sequences: A015638 A015639 A015640 this_sequence A015642 A015643 
               A015644
%K A015641 nonn
%O A015641 2,6
%A A015641 Olivier Gerard (olivier.gerard(AT)gmail.com)