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A025409 Numbers that are the sum of 4 distinct positive cubes in exactly 2 ways. 3
1036, 1134, 1352, 1367, 1430, 1465, 1484, 1547, 1582, 1638, 1709, 1736, 1764, 1800, 1801, 1820, 1862, 1863, 1881, 1918, 1953, 1972, 2009, 2070, 2080, 2099, 2136, 2197, 2268, 2288, 2305, 2331, 2340, 2422, 2464, 2483, 2485, 2520, 2548, 2584, 2799, 2800 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
Jean-François Alcover, Table of n, a(n) for n = 1..439
EXAMPLE
1036 = 1^3 + 2^3 + 3^3 + 10^3 = 3^3 + 4^3 + 6^3 + 9^3.
MATHEMATICA
Reap[For[n = 100, n <= 10000, n++, r = Reduce[0 < w < x < y < z && n == w^3 + x^3 + y^3 + z^3, {w, x, y, z}, Integers]; If[r =!= False, If[Length[r] == 2, Print[n]; Sow[n]]]]][[2, 1]] (* Jean-François Alcover, Nov 30 2016 *)
CROSSREFS
Sequence in context: A219445 A163558 A025412 * A043388 A184210 A163559
KEYWORD
nonn
AUTHOR
STATUS
approved

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Last modified May 18 15:24 EDT 2024. Contains 372664 sequences. (Running on oeis4.)