A038864 Numbers ending with '9' that are the difference of two positive cubes.

19, 169, 189, 279, 469, 819, 919, 999, 1519, 1899, 2169, 2189, 2269, 2619, 3159, 3169, 3429, 3789, 4069, 4219, 4849, 5409, 5419, 5489, 5859, 6669, 6769, 7839, 7999, 8269, 8379, 8749, 9919, 10439, 10449, 10719, 11349, 11529, 11719, 12159, 13669, 13699

Offset

1,1

Links

Harvey P. Dale, Table of n, a(n) for n = 1..350

Mathematica

dtcQ[n_]:=Total[Boole[Table[IntegerQ[Surd[k^3-n, 3]], {k, Floor[ Surd[ n, 3]]+1, 100}]]]>0; Select[Range[9, 14000, 10], dtcQ] (* Harvey P. Dale, Aug 31 2020 *)

Crossrefs

Sequence in context: A215115 A142128 A158966 * A036155 A224935 A047644

Adjacent sequences: A038861 A038862 A038863 * A038865 A038866 A038867

Keyword

nonn,base

Author

Jeff Burch

Extensions

Corrected by Ray Chandler, Nov 29 2008

Status

approved