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 A003328 Numbers that are the sum of 5 positive cubes. 49
 5, 12, 19, 26, 31, 33, 38, 40, 45, 52, 57, 59, 64, 68, 71, 75, 78, 82, 83, 89, 90, 94, 96, 97, 101, 108, 109, 115, 116, 120, 127, 129, 131, 134, 135, 136, 138, 143, 145, 146, 150, 152, 153, 155, 157, 162, 164, 169, 171, 172, 176, 181, 183, 188, 190, 192, 194, 195, 199 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS As the order of addition doesn't matter we can assume terms are in increasing order. - David A. Corneth, Aug 01 2020 It seems only a finite number N of positive integers are not in this sequence, and thus a(n) = n - N for all sufficiently large n. Is it true that 2243453, last term of A048927, is sufficiently large in that sense? - M. F. Hasler, Jan 04 2023 LINKS David A. Corneth, Table of n, a(n) for n = 1..10000 (first 1000 terms from T. D. Noe) Eric Weisstein's World of Mathematics, Cubic Number. EXAMPLE From David A. Corneth, Aug 01 2020: (Start) 3084 is in the sequence as 3084 = 5^3 + 5^3 + 5^3 + 8^3 + 13^3. 4385 is in the sequence as 4385 = 4^3 + 4^3 + 9^3 + 11^3 + 13^3. 5426 is in the sequence as 5426 = 8^3 + 9^3 + 9^3 + 12^3 + 12^3. (End) PROG (PARI) select( {is_A003328(n, k=5, m=3, L=sqrtnint(abs(n-k+1), m))=if( n>k*L^m || n

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Last modified May 18 08:45 EDT 2024. Contains 372618 sequences. (Running on oeis4.)