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A220079 7^(n!). 1

%I #14 Sep 08 2022 08:46:04

%S 7,7,49,117649,191581231380566414401

%N 7^(n!).

%H Vincenzo Librandi, <a href="/A220079/b220079.txt">Table of n, a(n) for n = 0..6</a>

%F a(n) = a(n - 1)^n, a(0) = 2.

%F a(n) = A000420(A000142(n)).

%t Table[7^(n!), {n, 0, 7}]

%o (Magma) [7^Factorial(n): n in [0..7]];

%o (Maxima) makelist(7^(n!),n,0,5); /* _Martin Ettl_, Dec 27 2012 */

%Y Cf. A000142, A000420, A050923, A100731, A220078.

%K nonn

%O 0,1

%A _Vincenzo Librandi_, Dec 16 2012

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Last modified March 29 09:14 EDT 2024. Contains 371268 sequences. (Running on oeis4.)