A082211 a(1) = 1, a(n) = smallest number such that the concatenation of a(n-1) and a(n) is a cube.

1, 25, 15456, 856771, 369216560433, 53121926897620104346304, 90882884027544851535943365261597107391586118375, 9624549613872381609002304614805220202214759532051700745455175806642907633107839483603609592

Offset

1,2

Links

Sean A. Irvine, Table of n, a(n) for n = 1..11

Example

a(2) = 25 hence a(3) = 15456 and 2515456 = 136^3.

Crossrefs

Cf. A082212.

Sequence in context: A061111 A238564 A195682 * A053766 A298467 A203543

Adjacent sequences: A082208 A082209 A082210 * A082212 A082213 A082214

Keyword

base,nonn

Author

Amarnath Murthy, Apr 10 2003

Extensions

Corrected and extended by David Wasserman, Aug 23 2004

Status

approved