A219784 Integers expressible as x^3 + 2*y^3 (x, y > 0) exactly in three ways.

314953199, 432015625, 924667442, 1664304379, 1953968750, 2519625592, 3456125000, 4600102375, 7397339536, 8503736373, 11664421875, 13314435032, 15631750000, 20157004736, 24966020934, 27649000000, 36800819000, 38000696086, 39369149875, 44936218233, 52757156250, 54001953125, 59178716288

Offset

1,1

Comments

Smallest integer with 4 ways: 575012796875: {x, y} = {8195, 2310}, {7225, 4625}, {6413, 5379}, {275, 6600}.

Links

Table of n, a(n) for n=1..23.

Example

314953199: (x,y) = (121, 539), (463, 476), (649, 275).

Crossrefs

Cf. A219722, A219725, A219726, A219728, A219783.

Sequence in context: A015410 A189055 A221985 * A105005 A157789 A331445

Adjacent sequences: A219781 A219782 A219783 * A219785 A219786 A219787

Keyword

nonn

Author

Zak Seidov, Nov 27 2012

Status

approved