This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A241095 #16 May 24 2023 18:31:58
%S A241095 1,4,576,1906624,151613669376,297546691796890624,
%T A241095 14546328186912540283109376,17761976839391142146587243652890624,
%U A241095 542089984111981439129333008468155364987109376,413588400456285638417956135979678948104381423950212890624
%N A241095 a(n) = (5^n - 1)^n.
%C A241095 Number of n X n {-2,-1,0,1,2} matrices with no zero rows.
%t A241095 Join[{1},Table[(5^n-1)^n,{n,10}]] (* _Harvey P. Dale_, May 24 2023 *)
%Y A241095 Cf. A055601, A060613, A240091.
%K A241095 nonn
%O A241095 0,2
%A A241095 _Hannah Ko_, Apr 15 2014
%E A241095 More terms from _Alois P. Heinz_, Apr 23 2014