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 A322848 #21 Feb 05 2020 15:50:37
%S A322848 1,14,1617,528491310,514843556263457213182264,
%T A322848 28511235679461510605581038657982805983853648817939444953417128835
%N A322848 a(n) = floor(e^(e^n) - 1).
%C A322848 Analog of A051179 replacing 2 with e.
%t A322848 Table[Floor[E^(E^n)-1],{n,0,5}] (* _Harvey P. Dale_, Feb 05 2020 *)
%o A322848 (PARI)
%o A322848 default(realprecision, 10000);
%o A322848 A322848(n) = floor(exp(exp(n)))-1; \\ _Antti Karttunen_, Jan 17 2019
%Y A322848 Cf. A051179.
%K A322848 nonn,easy
%O A322848 0,2
%A A322848 _Greg Huber_, Dec 28 2018