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 A384074 #8 Jun 01 2025 17:14:23
%S A384074 1,10,198,7384,450400,40340112,4977778288,810377196928,
%T A384074 168292881301248,43412461935328000,13617419946361149952,
%U A384074 5104272056570488986624,2253180383840385394370560,1156924438353338246938200064,683663789883272270452243200000
%N A384074 a(n) = permanent of the n X n circulant matrix with (row 1) = (1, 3, 5, 7, ..., 2n - 1).
%t A384074 z = 16; v[n_] := Table[2 k + 1, {k, 0, n - 1}];
%t A384074 u[n_] := Table[RotateRight[#, k - 1], {k, 1, Length[#]}] &[v[n]];
%t A384074 Table[Simplify[Permanent[u[n]]], {n, 1, z}]
%Y A384074 Cf. A005408, A193678 (determinant), A384075, A384076, A384077, A384078.
%K A384074 nonn
%O A384074 1,2
%A A384074 _Clark Kimberling_, May 22 2025