

A093221


a(n) is the largest number such that all of a(n)'s lengthn substrings are distinct and divisible by 21.


0




OFFSET

1,2


LINKS

Table of n, a(n) for n=1..10.
Hans Havermann, Table of A093211A093299


EXAMPLE

a(2) is 8421 because its length2 substrings (84, 42, 21) are all distinct and divisible by 21 and there is no larger number with this property


CROSSREFS

Cf. A093211, A093212, ..., A093299.
Sequence in context: A214117 A237137 A208182 * A023321 A116258 A116311
Adjacent sequences: A093218 A093219 A093220 * A093222 A093223 A093224


KEYWORD

base,nonn


AUTHOR

Hans Havermann, Mar 28 2004


STATUS

approved



