I would type the equation for you but on the android its not possible.

Really you got two types of wic:

STANDARD INBREEDING COEFFICIENT - includes only the subject's inbreeding in the first five generations
CUMULATIVE INBREEDING COEFFICIENT - includes all inbreeding in the subject's pedigree back as far as records allow (ten generations is perfect. IMO) (C.I.C is better than the S.I.C it gives a bigger picture!)
This might help you.
http://www.tenset.co.uk/fspeed/

There is also Hardimans C.O.I calculated to two decimals (usually the difference between wrights and hardimans is .02 to point .03)

Wright's Equation and Hardiman's Method are both based on the principle that the inbreeding of an individual is one half the relationship of its sire and dam, however the calculations involve different data and so the inbreeding coefficients produced by them are not interchangeable and should not be compared with each other. Wright's Equation is haphazardly calculated to any number of generations, whereas Hardiman's Method is always calculated to five generations. Wright's Equation considers duplicated ancestors only if they are common to both sire and dam, whereas Hardiman's Method considers all duplicated ancestors. Wrights Equation considers inbred ancestors only if they are duplicated ancestors, whereas Hardiman's Method considers all inbred ancestors.

An inbreeding coefficient calculated using Wright's Equation is neither an estimation of the number of genes put into the homozygous state nor an estimation of the percentage of inbreeding. It is merely the probability that identical alleles will be inherited from ancestors common to both sire and dam.

Hope this helps a bit!