[seqfan] Re: Absent digit

Reinhard Zumkeller reinhard.zumkeller at gmail.com
Tue Apr 14 14:37:40 CEST 2015


https://oeis.org/draft/A257001

again, one might now consider variants in other bases

Best regards
Reinhard

2015-04-14 10:47 GMT+02:00 Eric Angelini <Eric.Angelini at kntv.be>:

> Hello SeqFans,
> a simple but funny idea:
> a(n) is part of S if the biggest digit NOT visible
> in a(n) divides a(n).
>
> S = 18,27,36,45,54,63,72,81,96,98,108,117,126,135,144,153,162,171,...
>
> 81 is in S because the biggest INVISIBLE digit in 81 [9] divides 81;
> 96 is in S because the biggest INVISIBLE digit in 96 [8] divides 96;
> 98 is in S because the biggest INVISIBLE digit in 98 [7] divides 98;
> ...
>
> Best,
> É.
>
>
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