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%I #6 Mar 30 2012 18:39:52
%S 1,7,81,733,9695,162828,3131332,68186341,1663600878,1
%N Sum of the digits of n^(n^n).
%e 3^(3^3) = 7625597484987 and the sum of these digits is 81, the third term.
%t Table[Apply[Plus, IntegerDigits[i^i^i]], {i, 1, 10}]
%Y Cf. A002488.
%K nonn,base
%O 1,2
%A _Hans Havermann_, Nov 23 2003
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