A112673 Smallest positive integer that has a different number of distinct digits in each of the bases 2 through n.

1, 2, 21, 156, 2343, 131071, 797161, 45623244

Offset

2,2

References

Edwin Clark, Posting to Sequence Fan mailing list, Dec 28 2005

Links

Table of n, a(n) for n=2..9.

Crossrefs

A variant of A112670.

Sequence in context: A209519 A377859 A215710 * A263435 A202028 A265167

Adjacent sequences: A112670 A112671 A112672 * A112674 A112675 A112676

Keyword

nonn,base

Author

N. J. A. Sloane, Dec 30 2005

Extensions

a(8) and a(9) from John W. Layman, Jan 16 2006

Status

approved