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 A370257 #5 Feb 13 2024 15:02:44 %S A370257 1,1,48,4877756,6708527580006468,424156225450423505435959050352, %T A370257 3096938799441358561579846157094828974759254946464, %U A370257 5484145364462132568306927625143954420041387365219384210732084836139460712 %N A370257 Number of linear extensions of a 2 X n X n lattice. %F A370257 a(n) = A114715(n,n). %Y A370257 Main diagonal of A114715. %K A370257 nonn %O A370257 0,3 %A A370257 _Alois P. Heinz_, Feb 13 2024