A093227 a(n) is the largest number such that all of a(n)'s length-n substrings are distinct and divisible by 27.

0, 81, 97297, 9990999, 999009990, 99997299997, 9999990999999, 999999009999990

Offset

1,2

Links

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

Hans Havermann, Table of A093211-A093299

Example

a(3) is 97297 because its length-3 substrings (972, 729, 297) are all distinct and divisible by 27 and there is no larger number with this property

Crossrefs

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

Sequence in context: A128493 A145261 A013745 * A187751 A285997 A143675

Adjacent sequences: A093224 A093225 A093226 * A093228 A093229 A093230

Keyword

base,nonn

Author

Hans Havermann, Mar 28 2004

Status

approved