%I A060239
%S A060239 1,1,4,8,128,512,18432,73728,884736,14155776,1415577600,
%T A060239 11324620800,1630745395200,58706834227200,3757237390540800,
%U A060239 30057899124326400,7694822175827558400,92337866109930700800
%V A060239 1,-1,4,-8,128,512,-18432,73728,-884736,-14155776,1415577600,
%W A060239 11324620800,-1630745395200,-58706834227200,-3757237390540800,
%X A060239 30057899124326400,-7694822175827558400,-92337866109930700800
%N A060239 det(P*Q)/n! where P, Q are n X n matrices with P[i,j]=lcm(i,j), Q[i,j]=gcd(i,
               j).
%Y A060239 Cf. A001088, A060238.
%Y A060239 Sequence in context: A105036 A012940 A013049 this_sequence A127943 A012498 
               A133262
%Y A060239 Adjacent sequences: A060236 A060237 A060238 this_sequence A060240 A060241 
               A060242
%K A060239 sign
%O A060239 1,3
%A A060239 MCKAY john (mckay(AT)cs.concordia.ca), Mar 21 2001