A087336 a(1) = 7, then smallest number such that every partial product + 1 is a cube.

7, 9, 65, 2294, 6344286, 59597778583982, 3551895212145224329469808362, 12615959598060168145040535737856890513190349434065506322

Offset

1,1

Links

Table of n, a(n) for n=1..8.

Example

7+1 = 8, 7*9 +1 = 64= 8^3, 7*9*65+1 = 4096 = 16^3.

Crossrefs

Cf. A087337.

Sequence in context: A226197 A356779 A263836 * A178427 A106132 A285011

Adjacent sequences: A087333 A087334 A087335 * A087337 A087338 A087339

Keyword

nonn

Author

Amarnath Murthy, Sep 06 2003

Extensions

More terms from Don Reble, Sep 17 2003

Status

approved