F refers to Foundation Generation cross between ALC and domestic. This F number is for quick reference. TICA registration numbers are used to explain more clearly the ancestry of Foundation cats.
F1, A1T is the first generation cross, 50% or higher ALC blood
Most males are sterile, females are bred to domestic SBT Benglas
F2 is the second dilution of wild blood... Most males are sterile
F3 is the third dilution.. some males are fertile
F4 is usually the last dilution needed to produce Bengals with fertile males and females. A few F4 males are not fertile.

4th Generation from non domestic ancestor can be AOT; BOT; COT or SBT. this depends on whether only Bengals were used in the creation of the line, or whether an Egyptian Mau or other domestic breeds was used with the Foundation Bengals.
4th generation, using Bengal to Bengal breeding produces SBT.
TICA registration numbers tell a lot more about a Bengal's Heritage than the simple use of Foundation numbers
 


ABC's of TICA Pedigrees
Each cat registered with TICA has its
own unique registration number.

Understanding the meaning of the different characters in the registration number will give you an idea of the cat's ancestry.

If the cat is not SBT, then the first character of the prefix will be one of the following:
A- This cat has a parent registered as another breed or not registered (may be wild or domestic)
B- This cat has at least one grandparent that is another breed.
C- This cat has a great-grandparent that is another breed
0- This cat has an unregistered or unknown cat in it's 3 generation pedigree.

the second character will be one of the following:
1- This cat has an unregistered or unknown parent ( in Bengals this includes the wild ancestor)
2- This cat has at least one unregistered or unknown grandparent
3- This cat has at least one unregistered or non-domestic great grandparent
0- This cat has no unregistered or non-domestic cats in the three generation pedigree, but has cats registered as another breed within three generations.

             this is a   BOT, F4, Silver Bengal

The third character of the registration code will be
T- (Traditional) Only the breed in question within a three generation pedigree
V- (Variant) Crosses outside the breed but within the group within a three-generation pedigree
P- (Permissible) Crosses outside the breed or breed group which are permitted by the breeding program which has been established for the breed
N- (Non-Permissible) Crosses outside the breed or breed group which are not among those which are specifically allowed by the breeding program in progressing to established Championship statue.

Several people have B0T Bengals " grandsire/dam is E. Mau or other accepted non Bengal breed." now their kittens will be registered as CON.

If you breed a CON to SBT; or CON to CON you will get an SBT.

The six numbers following the prefix indicate the cat's birth date month, day, year

The last three numbers are number of the cats currently registered with TICA that were born the same day as your cat, could be any breed.