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 A374387 #9 Jul 10 2024 13:43:16
%S A374387 1,0,-4,36,129,3340,2287607,162104000,16943055268,4059346088384,
%T A374387 474967482901952,221630954408019520
%N A374387 a(n) is the maximal determinant of an n X n symmetric Toeplitz matrix having 0 on the main diagonal and all the first n-1 primes off-diagonal.
%H A374387 Wikipedia, <a href="https://en.wikipedia.org/wiki/Toeplitz_matrix">Toeplitz Matrix</a>.
%e A374387 a(5) = 3340:
%e A374387 [0, 5, 7, 3, 2]
%e A374387 [5, 0, 5, 7, 3]
%e A374387 [7, 5, 0, 5, 7]
%e A374387 [3, 7, 5, 0, 5]
%e A374387 [2, 3, 7, 5, 0]
%t A374387 a[n_]:=Max[Table[Det[ToeplitzMatrix[Join[{0},Part[Permutations[Prime[Range[n-1]]],i]]]],{i,(n-1)!}]]; Join[{1},Array[a,10]]
%Y A374387 Cf. A071079, A374341.
%Y A374387 Cf. A374386 (minimal), A374388 (maximal absolute value), A374389 (minimal nonzero absolute value).
%Y A374387 Cf. A374068 (minimal permanent), A374390 (maximal permanent).
%K A374387 sign,hard,more
%O A374387 0,3
%A A374387 _Stefano Spezia_, Jul 07 2024
%E A374387 a(11) from _Giorgos Kalogeropoulos_, Jul 10 2024