

A093798


a(n) is the largest number such that all of a(n)'s lengthn substrings are distinct and divisible by 45.


1



0, 900, 99000, 9990000, 999900000, 99999000000, 9999990000000, 999999900000000, 99999999000000000, 5555555595555555550555555555, 9555555559505555555505055555555, 9955555555950055555555050055555555, 9995555555595000555555550500055555555
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OFFSET

1,2


LINKS

Table of n, a(n) for n=1..13.
Hans Havermann, Table of A093211A093299


EXAMPLE

a(3) is 99000 because its length3 substrings (990, 900, 000) are all distinct and divisible by 45 and there is no larger number with this property.


CROSSREFS

Cf. A093211, A093212, ..., A093299.
Sequence in context: A283953 A262847 A093230 * A093218 A093215 A252674
Adjacent sequences: A093795 A093796 A093797 * A093799 A093800 A093801


KEYWORD

base,nonn


AUTHOR

Hans Havermann, Mar 28 2004


EXTENSIONS

a(11)a(13) from John Cerkan, Jan 09 2018


STATUS

approved



