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 A220079 #16 Jul 26 2025 10:44:48
%S A220079 7,7,49,117649,191581231380566414401
%N A220079 a(n) = 7^(n!).
%H A220079 Vincenzo Librandi, <a href="/A220079/b220079.txt">Table of n, a(n) for n = 0..6</a>
%F A220079 a(n) = a(n-1)^n, a(0) = 7.
%F A220079 a(n) = A000420(A000142(n)).
%t A220079 Table[7^(n!), {n, 0, 7}]
%o A220079 (Magma) [7^Factorial(n): n in [0..7]];
%o A220079 (Maxima) makelist(7^(n!),n,0,5); /* _Martin Ettl_, Dec 27 2012 */
%Y A220079 Cf. A000142, A000420, A050923, A100731, A220078.
%K A220079 nonn
%O A220079 0,1
%A A220079 _Vincenzo Librandi_, Dec 16 2012