Packings of equal circles in a square

2 circles

3 circles

4 circles

5 circles

6 circles

7 circles

8 circles

9 circles

10 circles

11 circles

12 circles

13 circles

14 circles

15 circles

16 circles

17 circles

18 circles

19 circles

20 circles

21 circles

22 circles

23 circles

24 circles

25 circles


Links

My article in "Elemente der Mathematik"
Kari J. Nurmela's publications
J.B.M Melissen's Dissertation: Packing and Coverings with Circles, PhD thesis, 1997 (Universiteit Utrecht).

The Apollonian sphere packing

My article in "Fractals"