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A072928
Let p_0(m) = the m-th prime number, p_[i+1](m) = p_i(p_i(m)); then a(n) = p_n(1).
0
2, 3, 11, 5381, 75063692618249
OFFSET
0,1
EXAMPLE
a(1)=3 because p_1(1) = p_0(p_0(1)) = p_0(2)=3.
CROSSREFS
Cf. A007097.
Sequence in context: A211349 A096456 A262201 * A140970 A058523 A103782
KEYWORD
nonn,changed
AUTHOR
Anonymous, Aug 12 2002
STATUS
approved