[seqfan] Re: Can we write this definition in a better way?

[Alonso Del Arte]

Surely the OEIS has a sequence that based on a similar, though perhaps
simpler concept. What I'd do if I were you, I'd think about figuring out
what that sequence is and looking it up. Hopefully it has a nice, clear
title that you can use with a slight adjustment for your sequence.

But it could just as easily have an opaque title, something like
"A350200(A350190 + A350191))." That would not be an example to emulate.

After you've done some searching and have come up with some relevant
crossrefs, please check back in here to let us know where you're at.

Al

On Sun, Sep 22, 2019 at 1:30 PM Ali Sada via SeqFan <seqfan at list.seqfan.eu>
wrote:

>
> Hi Everyone,
>
>
>
> Please see the sequence below. I just want to see if thereis there is a
> better way to write its definition. OEIS editors usually strugglewith my
> language, and I would really appreciate it if you could help me maketheir
> job easier.
>
> The sequence:
>
> 1 ,2 ,2 ,3 ,1 ,2 ,1 ,4 ,5 ,1 ,2 ,4 ,1 ,5 ,1 ,2 ,5 ,1 ,2 ,8 ,4,5 ,3 ,4 ,3
> ,6 ,1 ,8 ,3 ,2 ,5 ,4 ,7 ,6 ,2 ,3 ,9 ,1 ,2 ,12 ,4 ,5 ,3 ,4 ,8 ,9 ,7,8 ,3 ,10
> ,1 ,12 ,3 ,2 ,5 ,4 ,7 ,6 ,9 ,8 ,11 ,10 ,2 ,3 ,13 ,1 ,2 ,16 ,4 ,5 ,3 ,4,8 ,9
> ,7 ,8 ,12 ,13 ,11 ,12 ,3 ,14 ,1 ,16 ,3 ,2 ,5 ,4 ,7 ,6 ,9 ,8 ,11 ,10 ,13
> ,12,15 ,14 ,2 ,3,……
>
>
>
> The definition:
>
> “a(1)=1;
>
> a(2)=2;
>
> a(n)=n-m1, if a(n-1) is odd;
>
> a(n)=n-m2, if a(n-1) is even;
>
> m1 is the most recent position of the largest term up toa(n-1);
>
> m2 is the most recent position of the second largest term upto a(n-1)”
>
>
>
> Example 1: When n=10, a(9) is odd, the largest term up to thatpoint is 5.
> The most recent position of 5 is 9. a(10)=10-9=1
>
> Example 2: When n=17, a(16) is even. The second largest termup to that
> point is 4. The most recent position of 4 is 12. a(17)=17-12=5
>
> Thank you very much in advance.
>
>
>
> Best,
>
>
>
> Ali
>
>
> --
> Seqfan Mailing list - http://list.seqfan.eu/
>


-- 
Alonso del Arte
Author at SmashWords.com
<https://www.smashwords.com/profile/view/AlonsoDelarte>
Musician at ReverbNation.com <http://www.reverbnation.com/alonsodelarte>