OFFSET
0,3
COMMENTS
a(7) has 361 digits.
EXAMPLE
Given a(3) = 9: a(4) = (a(4-1)+1)^(4-1) = (9+1)^3 = 1000.
PROG
(PARI) a(n) = if (n==0, 0, (a(n-1) + 1)^(n-1)); \\ Michel Marcus, Feb 05 2021
CROSSREFS
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Feb 04 2002
STATUS
approved