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%I #5 Jun 03 2024 18:21:32
%S 1,3,11,257,10409849,13140065160047459074769,
%T 21553582667127297807356246702227694881720251470055162138373632739283194220056118692942769
%N Antidiagonal sums of A373341.
%C The next term is too large to be included in Data.
%t A373341[n_,k_]:=(n!)^(n^(k-1)); a[n_]:=Sum[A373341[n-k+1,k],{k,n}]; Array[a,7]
%Y Cf. A373341.
%K nonn
%O 1,2
%A _Stefano Spezia_, Jun 01 2024