%I #2 Mar 30 2012 17:37:44
%S 2,172603687936,3910825640696988096,396867211295273131775761,
%T 13586030059671762261567625351,4218282992523473247642107344280879104,
%U 5572272365289149102816175194628254483025277
%N Smallest number m greater than 1 such that m=(Sum_{i=1..k} d_i!)^n where d_1 d_2 ... d_k is the decimal expansion of m, or 0 if no m exists.
%C A139181(n)=A139180(n)^(1/n).
%e 172603687936=(1!+7!+2!+6!+0!+3!+6!+8!+7!+9!+3!+6!)^2
%Y Cf. A014080, A137604, A137605.
%K base,nonn
%O 1,1
%A _Farideh Firoozbakht_, Apr 22 2008
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