28

Created this poster two months ago for my birthday which is today.

After that I noticed that Constantin Brâncuși used the same geometric principles to design the Endless Column.

PS: There are 28 (16+8+4) circles inside the figure of 8.

http://www.moma.org/collection/object.php?object_id=81729
http://www.wmf.org/project/brancusi’s-endless-column-ensemble
http://www.sculpture.org/documents/scmag02/janfeb02/column/column.shtml