%I
%S 1141,251,54,39,18,17,16,14,4,13,11
%N Least index k such that n = A252486(k), minimal number of 6th powers that sum to k^6; or a(n)=0 if no such k exists.
%C It is not known whether a(6)>0.
%C Further values are a(19)=9, a(21)=7, a(22)=6, a(29)=5, a(36)=3, a(64)=2. The last of these is most probably the last nonzero term of the sequence.
%K nonn,more,hard
%O 7,1
%A _M. F. Hasler_, Dec 17 2014
