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%I #6 Jul 30 2017 22:14:36
%S 2,160,176128,2973761536,790377061679104,3337070496489549070336,
%T 224673304169436873829314985984,
%U 241628003280411784073600553618302304256,4154447778684876644944282114016459737751307157504
%N Noninvertible n X n matrices mod 4 (i.e., over the ring Z_4).
%F a(n) = 4^(n^2) - A065128(n).
%Y Cf. A011787, A065128.
%K nonn
%O 1,1
%A Sharon Sela (sharonsela(AT)hotmail.com), Apr 18 2002
%E More terms from _Max Alekseyev_, Jan 23 2012
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