%I #5 Mar 30 2012 18:39:11
%S 1,1,1,-2,-24,-138,-500,1200,56256,904912,11937696,144543360,
%T 1639736320,16965191808,141946949376,376837224448,-23412830208000,
%U -860170849536000,-22132932250013696,-501053473607319552,-10543220910009286656,-208356118642682839040
%N Determinant of n X n matrix M(n) where m(i,i)=i if i>j, m(i,j)=i-j if j>i, m(i,j)=j-i.
%o (PARI) a(n)=matdet(matrix(n,n,i,j,if(i-j,abs(i-j),i)))
%K sign
%O 0,4
%A _Benoit Cloitre_, Jan 17 2003
|