753377
[Commentary:
Arrangements of dots as singletons or pairs in rows of four.
Perhaps a counting system in base ]
Perhaps a counting system in base ]
681 (341) |
682 (341v) |
683 (342) |
684 (342v) |
685 (343) |
686 (343v) |
687 (344) |
688 (344v) |
689 (345) |
690 (345v) |