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 A022561 Numbers that are not the sum of 3 nonnegative cubes. 6
 4, 5, 6, 7, 11, 12, 13, 14, 15, 18, 19, 20, 21, 22, 23, 25, 26, 30, 31, 32, 33, 34, 37, 38, 39, 40, 41, 42, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 56, 57, 58, 59, 60, 61, 63, 67, 68, 69, 70, 71, 74, 75, 76, 77, 78, 79, 82, 83, 84, 85, 86, 87, 88, 89 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS T. D. Noe, Table of n, a(n) for n=1..10000 MATHEMATICA lst1=Range[1359]; lst3=Take[Union[Flatten[Table[a^3+b^3+c^3, {a, 0, 16}, {b, 0, 16}, {c, 0, 16}]]], 234] Complement[lst1, lst3] (* Vladimir Joseph Stephan Orlovsky, Feb 16 2010 *) Select[Range[90], PowersRepresentations[#, 3, 3] == {} &] (* Bruno Berselli, Nov 09 2012, after Giovanni Resta in A022555 *) CROSSREFS Complement of A004825. Sequence in context: A080723 A288737 A139448 * A213524 A047312 A191164 Adjacent sequences:  A022558 A022559 A022560 * A022562 A022563 A022564 KEYWORD nonn AUTHOR STATUS approved

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Last modified January 18 17:18 EST 2022. Contains 350455 sequences. (Running on oeis4.)