The function combin(22,6) produces 74,613 combinations.
However, I have an excel program which eleminates the majority of the
combination because it allows not more than 2 numbers in each subset
to be repeated. This results in a total of 77 combinations that meet
the criteria.
Example:
1,2,3,4,5,6
1,2,7,8,9,10
1,2,11,12,13,14
1,2,15,16,17,18
1,2,19,20,21,22
1,3,7,11,15,19
1,3,8,12,16,20
How can the combin function be manipulated to show the result of 77?

For testing purposes =combin(23,7) produces 245,157 combinations but
when not more than 3 numbers are allowed to repeat the result is 253
combinations that meet the criteria.
Dk