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