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A093280 a(n) is the largest number such that all of a(n)'s length-n substrings are distinct and divisible by 80. 0
0, 800, 88000, 9920000, 999200000, 99992000000, 9999920000000, 999999200000000, 99999992000000000, 9999999920000000000, 999999999200000000000, 99999999992000000000000, 9999999999920000000000000, 999999999999200000000000000, 99999999999992000000000000000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..15.

Hans Havermann, Table of A093211-A093299

EXAMPLE

a(3) is 88000 because its length-3 substrings (880, 800, 000) are all distinct and divisible by 80 and there is no larger number with this property.

CROSSREFS

Cf. A093211, A093212, ..., A093299.

Sequence in context: A043404 A015065 A097206 * A093240 A093220 A035757

Adjacent sequences:  A093277 A093278 A093279 * A093281 A093282 A093283

KEYWORD

base,nonn

AUTHOR

Hans Havermann, Mar 29 2004

EXTENSIONS

a(9)-a(15) from John Cerkan, Jan 05 2018

STATUS

approved

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Last modified May 31 02:18 EDT 2020. Contains 334747 sequences. (Running on oeis4.)