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 A252476 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. 2
 1141, 251, 54, 39, 18, 17, 16, 14, 4, 13, 11 (list; graph; refs; listen; history; text; internal format)
 OFFSET 7,1 COMMENTS 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. LINKS CROSSREFS Sequence in context: A206112 A232133 A261572 * A020397 A132410 A252428 Adjacent sequences: A252473 A252474 A252475 * A252477 A252478 A252479 KEYWORD nonn,more,hard AUTHOR M. F. Hasler, Dec 17 2014 STATUS approved

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Last modified December 3 15:08 EST 2022. Contains 358534 sequences. (Running on oeis4.)