A093291 - OEIS

A093291

a(n) is the largest number such that all of a(n)'s length-n substrings are distinct and divisible by 91.

0, 91, 910, 90091001, 99918, 99990899990, 9999990, 1111110099999900, 999999910, 99999990091111111001, 99999999918, 99999999990899999999990, 9999999999990

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OFFSET

1,2

LINKS

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

Hans Havermann, Table of A093211-A093299

EXAMPLE

a(4) is 90091001 because its length-4 substrings (9009, 0091, 0910, 9100, 1001) are all distinct and divisible by 91 and there is no larger number with this property.

CROSSREFS

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

Sequence in context: A072393 A085952 A129255 * A254519 A185375 A036526

Adjacent sequences: A093288 A093289 A093290 * A093292 A093293 A093294

KEYWORD

base,nonn

AUTHOR

Hans Havermann, Mar 29 2004

EXTENSIONS

a(11)-a(13) from John Cerkan, Jul 01 2017

STATUS

approved