diff --git a/journal/2023-05-27.md b/journal/2023-05-27.md
index c2c5455b4..2f8deeb92 100644
--- a/journal/2023-05-27.md
+++ b/journal/2023-05-27.md
@@ -26,6 +26,8 @@
     - [ ] redirect links to join.social.coop
     - [ ] move wiki-alpha -> wiki
     - [ ] set up auth.social.coop seed accounts
+- [[hex numbers]] == [[centered hexagonal numbers]]
 - [[agora]]
   - more fixes :)
+    - which next?
   - [ ] what about shipping [[primes]], that 'out there' executable subnodes implementation that was actually working? :)