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A375330
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a(n) is the smallest number which can be represented as the sum of 6 distinct positive n-th powers in exactly 3 ways, or -1 if no such number exists.
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5
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OFFSET
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1,1
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LINKS
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EXAMPLE
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a(6) = 201968338 = 2^6 + 3^6 + 14^6 + 18^6 + 19^6 + 22^6
= 2^6 + 10^6 + 14^6 + 15^6 + 18^6 + 23^6
= 4^6 + 6^6 + 10^6 + 11^6 + 21^6 + 22^6.
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CROSSREFS
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Cf. A046881, A342896, A374418, A374421, A374422, A374423, A374424, A374425, A375329, A375331, A375332, A375333, A375334.
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KEYWORD
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nonn,hard,more
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AUTHOR
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STATUS
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approved
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