Puzzle ZEIA 

Workings

Hint
There are more than 37, look at the different sizes.

Answer
There are 64 hexagon-type shapes in total.

Reasoning
37 single hexagons
 + 19 hexagons that contain 7 smaller hexagons
 + 7 hexagons that contain 19 smaller hexagons
 + 1 large hexagon that contains all of the smaller hexagons.