A093280 a(n) is the largest number such that all of a(n)'s length-n substrings are distinct and divisible by 80.

0, 800, 88000, 9920000, 999200000, 99992000000, 9999920000000, 999999200000000, 99999992000000000, 9999999920000000000, 999999999200000000000, 99999999992000000000000, 9999999999920000000000000, 999999999999200000000000000, 99999999999992000000000000000

Offset

1,2

Links

Table of n, a(n) for n=1..15.

Hans Havermann, Table of A093211-A093299

Example

a(3) is 88000 because its length-3 substrings (880, 800, 000) are all distinct and divisible by 80 and there is no larger number with this property.

Crossrefs

Cf. A093211, A093212, ..., A093299.

Sequence in context: A043404 A015065 A097206 * A093240 A093220 A035757

Adjacent sequences: A093277 A093278 A093279 * A093281 A093282 A093283

Keyword

base,nonn

Author

Hans Havermann, Mar 29 2004

Extensions

a(9)-a(15) from John Cerkan, Jan 05 2018

Status

approved