A189821 Smallest integer m such that m*j is a sum of two distinct positive cubes for j=1..n.

9, 728, 2457, 124488, 124488, 124488

Offset

1,1

Comments

Identifies the first arithmetic progression with at least n terms in A024670.

Terms beyond a(6) are >= 1400000 (but may not exist).

Links

Table of n, a(n) for n=1..6.

Example

a(6)=m=124488: 1*m=124488=34^3+44^3, 2*m=248976=22^3+62^3, 3*m=373464=6^3+72^3=54^3+60^3, 4*m=497952=17^3+79^3, 5*m=622440=37^5+83^3, 6*m=746928=71^3+73^3.

Crossrefs

Cf. A024670, A191345, A191352, A191383.

Sequence in context: A161585 A255259 A191367 * A053933 A145262 A154026

Adjacent sequences: A189818 A189819 A189820 * A189822 A189823 A189824

Keyword

nonn

Author

Zak Seidov, Jun 02 2011

Status

approved