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A093798 a(n) is the largest number such that all of a(n)'s length-n substrings are distinct and divisible by 45. 1
0, 900, 99000, 9990000, 999900000, 99999000000, 9999990000000, 999999900000000, 99999999000000000, 5555555595555555550555555555, 9555555559505555555505055555555, 9955555555950055555555050055555555, 9995555555595000555555550500055555555 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

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

Hans Havermann, Table of A093211-A093299

EXAMPLE

a(3) is 99000 because its length-3 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

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Last modified May 27 16:48 EDT 2022. Contains 354110 sequences. (Running on oeis4.)