A093255 a(n) is the largest number such that all of a(n)'s length-n substrings are distinct and divisible by 55.

0, 55, 660550, 5500550, 6666055550, 55550055550, 66666605555550, 555555005555550, 666666660555555550, 5555555500555555550, 6666666666055555555550, 55555555550055555555550, 66666666666605555555555550, 555555555555005555555555550, 666666666666660555555555555550

Offset

1,2

Links

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

Hans Havermann, Table of A093211-A093299

Example

a(3) is 660550 because its length-3 substrings (660, 605, 055, 550) are all distinct and divisible by 55 and there is no larger number with this property.

Crossrefs

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

Sequence in context: A172808 A243315 A172856 * A172896 A201823 A115410

Adjacent sequences: A093252 A093253 A093254 * A093256 A093257 A093258

Keyword

base,nonn

Author

Hans Havermann, Mar 29 2004

Extensions

a(9)-a(15) from John Cerkan, Jan 08 2018

Status

approved