The
Equations  Always round up to
nearest whole number.
# columns = X = W / (d * 1.732) 

# rows = Y = (2L  d) / 3d 
If Y is even, subtract 1 so that Y is odd. 

# hexagons = (((Y3 / 2) + 0.5) * X2) + (((Y3 / 2) 
0.5) * ( X2  1)) 

# half hexagons = ((Y3 / 2)  0.5) * 2 

Example (Double size quilt)
W = 80", L
= 95", d = 1"
# columns = X = 80 / (1 * 1.732) = 46.189 = 47 

# rows = Y = ((2 * 95)  1) / (3 * 1) = 63 

# hexagons = (((63 / 2) + 0.5) * 47) + (((63 / 2) 
0.5) * ( 47  1)) = 2930 

# half hexagons = ((63 / 2)  0.5) * 2 = 62 

Actual Size of Quilt
W = Xd(1.732) = 47(1)(1.732) = 81.40"


L = (((Y  1) / 2) * 3 d) + 2 d = ((151)/2) * (3)(1)
+ (2)(1) = 23


