|
| |
|
|
A003074
|
|
Number of different numbers <= n that are sums of 3 positive cubes.
|
|
0
|
|
|
|
0, 0, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 12, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 14, 14
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
1,10
|
|
|
REFERENCES
|
H. Davenport, Sums of three positive cubes, J. London Math. Soc., 25 (1950), 339-343. Coll. Works III p. 999.
|
|
|
LINKS
|
Table of n, a(n) for n=1..93.
|
|
|
MATHEMATICA
|
Accumulate[Table[If[Length[Select[PowersRepresentations[n, 3, 3], FreeQ[ #, 0]&]]>0, 1, 0], {n, 100}]] (* Harvey P. Dale, Sep 14 2020 *)
|
|
|
CROSSREFS
|
Cf. A003072.
Sequence in context: A054896 A052364 A052374 * A279222 A276798 A067100
Adjacent sequences: A003071 A003072 A003073 * A003075 A003076 A003077
|
|
|
KEYWORD
|
nonn
|
|
|
AUTHOR
|
N. J. A. Sloane, David W. Wilson
|
|
|
STATUS
|
approved
|
| |
|
|
