0,3
a(5) > 10^(10^50).
Table of n, a(n) for n=0..4.
a(n) = n!^a(n - 1) starting with a(0)=0!=1.
a(3) = 36 because 3!^(2!^(1!^0!)) = 36
a[0] := 1 a[n_Integer] := n!^a[n - 1]
Cf. A049384, A358972 (exponents left to right).
Sequence in context: A280420 A051459 A358972 * A078081 A077772 A083150
Adjacent sequences: A073578 A073579 A073580 * A073582 A073583 A073584
easy,nonn
Jon Kongsvold (Jon.Kongsvold(AT)idi.ntnu.no), Aug 28 2002
Edited by Henry Bottomley, Jul 13 2003
approved
