A080808 a(1) = 4, a(n)= smallest n-th power obtained by inserting digits anywhere in a(n-1).

4, 49, 4096, 3748096, 4932784804069376, 44934932784038660743085694310776796224

Offset

1,1

Comments

a(7) > 10^49. A simple heuristic argument suggests that a(7) has > .999 probability of having between 88 and 99 digits. - David Wasserman, Dec 28 2007

Links

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

Crossrefs

Cf. A080514, A080515, A080516, A080807, A080809, A080810, A080811, A080812, A097661.

Sequence in context: A067714 A068178 A050630 * A284328 A087588 A027533

Adjacent sequences: A080805 A080806 A080807 * A080809 A080810 A080811

Keyword

base,more,nonn

Author

Amarnath Murthy, Mar 22 2003

Extensions

More terms from Ray G. Opao, Sep 20 2004

Status

approved