Full data set from August Dojo puzzle

[Mark Champine]

Hi Everyone,

We had fun with this puzzle at the meetup, so here's the full data set. If you solve it, post your solution here!

Your job is to answer the following questions:

1. What's the format? 
   
2. How is it encoded below?
3. What do you get when you decode it?  (hint: it's a type of special purpose image you see fairly often)
   
4. What's the secret encoded in the format?  (this will be obvious after answering the questions above)

(def bosclj-data
  [[:b 7 2 1 2 2 2 1 2 1 2 7]
   [:b 1 5 1 3 3 1 3 2 2 1 1 5 1]
   [:b 1 1 3 1 1 1 3 1 3 1 1 3 1 1 1 1 3 1 1]
   [:b 1 1 3 1 1 2 3 1 3 2 2 2 1 1 3 1 1]
   [:b 1 1 3 1 1 3 1 3 1 2 3 2 1 1 3 1 1]
   [:b 1 5 1 2 1 3 1 3 1 1 1 2 1 5 1]
   [:b 7 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 7]
   [:w 8 3 1 3 1 2 1 1 9]
   [:b 3 1 5 1 2 2 4 1 4 3 1 2]
   [:w 4 1 2 1 2 2 2 2 1 2 1 1 1 1 2 1 2 1]
   [:b 1 1 1 1 1 1 4 3 1 2 1 4 2 1 1 1 3]
   [:b 1 1 1 5 1 2 1 5 1 2 2 5 1 1]
   [:b 2 1 4 1 1 3 1 2 3 1 5 1 1 1 2]
   [:b 1 1 2 1 1 1 1 3 3 2 2 3 2 2 1 2 1]
   [:w 1 4 1 3 2 2 1 1 1 1 1 1 2 2 3 1 2]
   [:b 1 1 2 1 1 4 1 1 9 2 3 1 1 1]
   [:w 1 1 1 1 1 4 2 1 2 4 1 4 2 1 1 2]
   [:w 1 1 2 2 1 1 1 3 2 1 1 2 2 1 1 1 2 2 1 1]
   [:b 1 1 1 1 4 5 1 3 1 4 2 3 2]
   [:w 1 1 3 1 2 1 2 1 5 2 1 3 2 1 1 1 1]
   [:b 1 2 4 5 1 3 9 4]
   [:w 8 2 1 3 2 1 2 2 3 1 1 3]
   [:b 7 1 2 1 2 1 1 2 1 1 2 1 1 1 2 1 2]
   [:b 1 5 1 1 3 1 3 2 2 1 1 3 2 1 2]
   [:b 1 1 3 1 1 1 1 2 1 2 1 2 1 2 5 3 1]
   [:b 1 1 3 1 1 4 1 2 1 1 2 2 2 2 1 1 3]
   [:b 1 1 3 1 1 1 1 1 1 2 1 3 2 1 1 2 3 2 1]
   [:b 1 5 1 1 1 2 1 4 2 1 2 1 2 3 1 1]
   [:b 7 1 1 1 1 1 1 2 3 1 2 2 3 1 2]])

Both teams guessed the encoding pretty quickly and decoded to ascii first. More challenging is displaying the image graphically.  So far the image has been displayed with ImageMagick, Quil, and HTML.

Have fun!