155537

I know the total amount of solutions is 512 because there are 32 different shapes the worm can make because normally it can make three shapes in every direction so you would get twelve and then you can reverse it all apart from the straight lines because they will just be the same so you get 20. Then you add on the shapes which are squares to get 24 then you have to twist it up and you get 4 more and then you reverse it to get 32. Finally you need to times 32 by 16 to get 512