Triangular nested grids:
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| 3,3,3,3... or 5,5,5,... | 
Geometric drawings, ratios, number theory and geometry, geometric art, construction of regular polygons, tessellations and other visual mathematical concepts.
Images that show a visual representation of Fermat numbers and how those images can be used to create tessellations and other types of mathematical art.
The images are a combination of visual geometry and visual number theory with an art component.
The images are based on square grids.
The starting point for the Fermat numbers (3,5,17,257...) is a 3x3 square grid.