A085404 - OEIS

%I #3 Mar 31 2012 13:20:48

%S 1,75,79380,1310904000,344319762124800,1444887697908695040000,

%T 96976611786040182520676352000,

%U 104131021972308383324202529613414400000,1788970984376098024967914354100894418012733440000

%N Number of n X n matrices over GF(4) with rank n-1.

%F For n>=2: a(n) = product j=0...n-2 (4^n - 4^j)^2 / (4^(n-1)- 4^j).

%Y Cf. A086752, A053291, A060869.

%K nonn,easy

%O 1,2

%A Yuval Dekel (dekelyuval(AT)hotmail.com), Jul 31 2003

%E More terms from _David Wasserman_, Jan 31 2005