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%I #16 May 24 2023 18:31:58
%S 1,4,576,1906624,151613669376,297546691796890624,
%T 14546328186912540283109376,17761976839391142146587243652890624,
%U 542089984111981439129333008468155364987109376,413588400456285638417956135979678948104381423950212890624
%N a(n) = (5^n - 1)^n.
%C Number of n X n {-2,-1,0,1,2} matrices with no zero rows.
%t Join[{1},Table[(5^n-1)^n,{n,10}]] (* _Harvey P. Dale_, May 24 2023 *)
%Y Cf. A055601, A060613, A240091.
%K nonn
%O 0,2
%A _Hannah Ko_, Apr 15 2014
%E More terms from _Alois P. Heinz_, Apr 23 2014
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