[seqfan] Re: length(n) = weight(n) ?

[Frank Adams-watters]

Except he's using decimal length, not binary length. It is binary weight, however.

Yuri: call this "decimal length", not just "length".

Franklin T. Adams-Watters


-----Original Message-----
From: Neil Sloane <njasloane at gmail.com>
To: Sequence Fanatics Discussion list <seqfan at list.seqfan.eu>
Cc: юрий герасимов <2stepan at rambler.ru>
Sent: Tue, May 25, 2021 12:27 pm
Subject: [seqfan] Re: length(n) = weight(n) ?

if length(n) = wt(n) then n is 1111111 in base 2 = 2^m-1


Best regards
Neil

Neil J. A. Sloane, President, OEIS Foundation.
11 South Adelaide Avenue, Highland Park, NJ 08904, USA.
Also Visiting Scientist, Math. Dept., Rutgers University, Piscataway, NJ.
Phone: 732 828 6098; home page: http://NeilSloane.com
Email: njasloane at gmail.com



On Tue, May 25, 2021 at 5:38 AM юрий герасимов via SeqFan <
seqfan at list.seqfan.eu> wrote:

> Dear SeqFans, Is it terminologically correct if for OEIS the sequence: 1,
> 2, 4, 8, 10, 12, 17, 18, 20, 24, 33, ... I call "a (n) such that length (n)
> = weight (n)"? In this case, I will mean that "length = A055642" and
> "weight = A000120". Thanks. JSG.
>
> --
> Seqfan Mailing list - http://list.seqfan.eu/
>

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