This is 21 to 1 - cross dots.
Gallery
durgees
Here are the kolams and rangolis in this page:
    - Pinwheels_lamps
 - Drinks break!
 - kolam
 - kolam
 
The dots pattern for the below is (2,4,6,8,10,10,8,6,4,2). Some more dots in the middle of the 4 dots as seen in the picture. This can be enlarged, by increasing it on multiple of 4 like 14 to 2, 18 to 2, and so...








