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%I #2 Mar 31 2012 14:41:48
%S 1,2,3,4,5,9,10,8,25,343,3969,13090,73344,77398016
%N Iterative mapping with offset: a(1)=1, a(n)=A095904(a(n-1)-1).
%C a(15) is greater than 10^11 and of the form (p^10)(q^5)(r^2)(s^2)tu, where p, q, r, s, t and u are distinct primes.
%H Will Nicholes, <a href="http://willnicholes.com/math/primesigmap.htm">Iterative mapping of prime signatures</a>.
%Y Cf. A095904, A179224.
%K nonn
%O 1,2
%A _Will Nicholes_, Jul 10 2010