PSL4#46

I think you just forgot to include the equilateral triangles of side length 1

50  of side length 1

16 + 16 =  32 of side length  2

9 + 9  =  18 of side length 3

4 + 4  =  8 of side length 4

1 + 1  = 2  of side length 5

So

50 + 32 + 18 + 8 + 2  =   110