A093277 a(n) is the largest number such that all of a(n)'s length-n substrings are distinct and divisible by 77.

0, 77, 924, 7700770, 3303388088, 99992299992, 88888803333330, 777777007777770, 999999924, 7777777700777777770, 3333333303388888888088, 99999999992299999999992, 88888888888803333333333330, 777777777777007777777777770, 999999999999924

Offset

1,2

Links

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

Hans Havermann, Table of A093211-A093299

Example

a(4) is 7700770 because its length-4 substrings (7700, 7007, 0077, 0770) are all distinct and divisible by 77 and there is no larger number with this property.

Crossrefs

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

Sequence in context: A205434 A125581 A176632 * A217643 A205603 A073931

Adjacent sequences: A093274 A093275 A093276 * A093278 A093279 A093280

Keyword

base,nonn

Author

Hans Havermann, Mar 29 2004

Extensions

a(11)-a(12) from John Cerkan, Jul 17 2017

a(13)-a(15) from John Cerkan, Jan 05 2018

Status

approved