%I #8 Oct 04 2013 09:26:26

%S 1,2,4,5,7,8,15,23,31,87,111,119,167,335,1391,1455,1607,1679,1991,

%T 25887,26375

%N Not the sum of three perfect powers (assuming 1, but not 0, is a perfect power).

%C No other terms < 10^9. Presumably the sequence is finite.

%Y Cf. A113505, A135693, A135393, A135402.

%Y Complement of A074499.

%K nonn

%O 1,2

%A _Zak Seidov_ and _Giovanni Resta_, Feb 24 2008