[seqfan] Use of graphics

Veikko Pohjola veikko at nordem.fi
Thu Dec 28 16:55:53 CET 2017

Dear seqfans,

I have some time ago submitted some palindromic sequences having interesting features which, however, become apparent only when viewed in a very large scale. A b-file is not always the most illustrative way. For instance, the length and the shift of the longest palindromic subsequence in the first n terms of A293700 behave roughly as depicted in the attachments. 
The length of palindrome remains less than n except at some relatively rare points where A293700 is fully palindromic.
https://tastefulalgebra.files.wordpress.com/2017/12/lenpalsgraafi.pdf <https://tastefulalgebra.files.wordpress.com/2017/12/lenpalsgraafi.pdf> 
The palindrome shifts its position within A293700 in a strange way as n grows. 
https://tastefulalgebra.files.wordpress.com/2017/12/shift-a293706.pdf <https://tastefulalgebra.files.wordpress.com/2017/12/shift-a293706.pdf>

Are there any guidelines in OEIS for illustrating this sort of sequences by using graphics?

Veikko Pohjola

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