A093272 - OEIS

A093272

a(n) is the largest number such that all of a(n)'s length-n substrings are distinct and divisible by 72.

%I #8 Jan 08 2018 11:27:35

%S 0,72,9360,993600,889928800,98899208800,9988992008800,999889920008800,

%T 99998899200008800,88888898888888880888888888,

%U 98888889888088888808880888888,99888888988800888888088800888888,99988888898880008888880888000888888

%N a(n) is the largest number such that all of a(n)'s length-n substrings are distinct and divisible by 72.

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

%e a(4) is 993600 because its length-4 substrings (9936, 9360, 3600) are all distinct and divisible by 72 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_, Jan 08 2018