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 A369834 #11 Feb 11 2024 11:18:26
%S A369834 1,1,2,5,23,94,614,4628,38243,351024
%N A369834 a(n) is the number of distinct values of the determinant of an n X n symmetric Toeplitz matrix using the integers 0 to n-1.
%H A369834 Wikipedia, <a href="http://en.wikipedia.org/wiki/Toeplitz_matrix">Toeplitz Matrix</a>.
%F A369834 a(n) <= A000142(n).
%t A369834 a[n_] := CountDistinct[Table[Det[ToeplitzMatrix[Part[Permutations[Join[{0}, Range[n - 1]]], i]]], {i, n !}]]; Join[{1}, Array[a,9]]
%o A369834 (Python)
%o A369834 from itertools import permutations
%o A369834 from sympy import Matrix
%o A369834 def A369834(n): return len({Matrix([p[i:0:-1]+p[:n-i] for i in range(n)]).det() for p in permutations(range(n))}) # _Chai Wah Wu_, Feb 11 2024
%Y A369834 Cf. A000142, A358323, A358324, A358325.
%Y A369834 Cf. A369830, A369831, A369832, A369833, A369835.
%K A369834 nonn,hard,more
%O A369834 0,3
%A A369834 _Stefano Spezia_, Feb 03 2024