08-20-2013, 06:12 PM
It's a little bit more complex than that 
"There are 21 clockwise blue spirals and 13 counterclockwise aqua spirals. 21 and 13 are two numbers in the sequence. This pattern allows the density of the seeds on the head to be uniform without overcrowding in the middle or sparseness along the edges."
"There are 21 clockwise blue spirals and 13 counterclockwise aqua spirals. 21 and 13 are two numbers in the sequence. This pattern allows the density of the seeds on the head to be uniform without overcrowding in the middle or sparseness along the edges."