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%I #2 Mar 31 2012 14:41:48
%S 1,3,5,6,7,25,20,16,121,2209,5460,571,1136,154963892093
%N Iterative mapping: a(1)=1, a(n)=A095904(a(n-1)).
%C a(15) is greater than 10^18.
%H Will Nicholes, <a href="http://willnicholes.com/math/primesigmap.htm">Iterative mapping of prime signatures</a>.
%Y Cf. A095904, A179219.
%K nonn
%O 1,2
%A _Will Nicholes_, Jul 10 2010
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