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 A071410 #10 Apr 18 2024 10:28:02
%S A071410 1,1,196,65028096,1540115470208876544,
%T A071410 861787404007697994335390269440000,
%U A071410 3024149801599872168810739614376506649075557335040000,25610879735369429335666530857036523659955793212506655095941286757767577600000000
%N A071410 Determinant of the 2n X 2n matrix m(i,j) = i^j - j^i.
%C A071410 Determinant of the (2n+1) X (2n+1) matrix m(i,j) = i^j-j^i is zero.
%t A071410 Join[{1}, Table[Det[Table[i^j - j^i, {i, 1, 2*n}, {j, 1, 2*n}]], {n, 1, 8}]] (* _Vaclav Kotesovec_, Apr 18 2024 *)
%o A071410 (PARI) for(n=1,20,print1(matdet(matrix(2*n,2*n,i,j,i^j-j^i)),","))
%K A071410 easy,nonn
%O A071410 0,3
%A A071410 _Benoit Cloitre_, May 28 2002
%E A071410 a(0)=1 prepended by _Alois P. Heinz_, Jan 25 2023