[seqfan] Re: Possible method for determining bound of A288554

[Richard J. Mathar]

gt> Date: Wed, 1 Sep 2021 19:53:52 -0800
gt> From: Gary Thompson <23garyt at gmail.com>
gt> To: seqfan at list.seqfan.eu
gt> Subject: [seqfan] Possible method for determining bound of A288554
gt> ..
gt> First, we will define a new shape, the squiggle. Squiggles can be any
gt> closed, simple curve with the property that any two k-squiggles can
gt> only intersect at k points. For this initial algorithm, we will limit
gt> ourselves to 2-squiggles.
gt> ...

Generalizations of that sort have been tabulated
in  https://arxiv.org/abs/1603.00077 .