A093256 a(n) is the largest number such that all of a(n)'s length-n substrings are distinct and divisible by 56.

0, 56, 67280, 90728008, 773360088, 88877688800, 57750008008000, 77774704000080080000, 77777677600000800800000, 77777790720000008008000000, 77773773000000080080000000, 88888888788088888888088088888888, 77777757750000000008008000000000

Offset

1,2

Links

Table of n, a(n) for n=1..13.

Hans Havermann, Table of A093211-A093299

Example

a(3) is 67280 because its length-3 substrings (672, 728, 280) are all distinct and divisible by 56 and there is no larger number with this property.

Crossrefs

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

Sequence in context: A159673 A009837 A308390 * A177325 A135315 A376666

Adjacent sequences: A093253 A093254 A093255 * A093257 A093258 A093259

Keyword

base,nonn

Author

Hans Havermann, Mar 29 2004

Extensions

a(11)-a(13) from John Cerkan, Jan 08 2018

Status

approved