A093287 - OEIS

%I #18 Jan 05 2018 02:56:27

%S 0,87,957,9918,99963,888444222111,2022228505555,7707077711010111,

%T 999999924,9999999936,3333333303366666666066,999999990990666666660660,

%U 88888800088085555550005505,99999999999972,555555555055005888888888088008,66666666660660669999999999099099

%N a(n) is the largest number such that all of a(n)'s length-n substrings are distinct and divisible by 87.

%H Hans Havermann, <a href="/A093211/a093211.txt">Table of A093211-A093299</a>

%e a(6) is 888444222111 because its length-6 substrings (888444, 884442, 844422, 444222, 442221, 422211, 222111) are all distinct and divisible by 87 and there is no larger number with this property.

%Y Cf. A093211, A093212, ..., A093299.

%K base,nonn

%O 1,2

%A _Hans Havermann_, Mar 29 2004

%E a(11)-a(13) from _John Cerkan_, Jul 05 2017

%E a(14)-a(16) from _John Cerkan_, Jan 04 2018