A093275 a(n) is the largest number such that all of a(n)'s length-n substrings are distinct and divisible by 75.

0, 75, 9750, 997500, 99975000, 9999750000, 999997500000, 99999975000000, 9999999750000000, 999999997500000000, 99999999975000000000, 9999999999750000000000, 999999999997500000000000, 99999999999975000000000000, 9999999999999750000000000000

Offset

1,2

Links

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

Hans Havermann, Table of A093211-A093299

Example

a(4) is 997500 because its length-4 substrings (9975, 9750, 7500) are all distinct and divisible by 75 and there is no larger number with this property.

Crossrefs

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

Sequence in context: A114910 A294983 A361282 * A251242 A259464 A116527

Adjacent sequences: A093272 A093273 A093274 * A093276 A093277 A093278

Keyword

base,nonn

Author

Hans Havermann, Mar 29 2004

Extensions

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

Status

approved