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A252476
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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.
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2
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1141, 251, 54, 39, 18, 17, 16, 14, 4, 13, 11
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OFFSET
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7,1
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COMMENTS
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It is not known whether a(6)>0.
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.
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LINKS
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CROSSREFS
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KEYWORD
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nonn,more,hard
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AUTHOR
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STATUS
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approved
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