[seqfan] Re: A187781 - Number of noncongruent polygonal regions in a regular n-gon with all diagonals drawn

[brad klee]

> I will attempt to enact the above changes to OEIS.

If you know what to do, I don't want to help too much. 
You may be right either sequence needing clarification
what "congruent" means in context.  

I updated the community post with cleaned code, and a 
more direct bugs analysis. It's still not perfect, but 
seems to do okay up to a 20-gon:

https://community.wolfram.com/groups/-/m/t/2934769

The code also prints Hue-colored diagrams, where we can
see the accidental congruence. It looked like the 18-gon
had numerous coincidences, but I'm still a bit skeptical 
if that is reproducible or my mistake. 

The algorithm has a way to handle change of precision, 
but I haven't looked closely enough at statistics to 
make use of precision tuning. 

--Brad