Quote Originally Posted by psychopixi
Okay... so I have 7 or so hours to crack this. *determined* how about this...

How about the children of the original four mate with each other - to give 64, and with the one of the original four who is of the opposie sex and not a parent, giving an extra 64.

Say the original four are Ma, Fa, Mb and Fb.

Ma and Fa have M1, M2, F1, and F2.
Ma and Fb have M3, M4, F3 and F4.
Mb and Fa have M5, M6, F5 and F6.
Mb and Fb have M7, M8, F7 and F8.

That's 16 kids.

Ma and Fa's kids have to mate with Mb and Fb's kids to ensure no incest occurs.
Mb and Fa's kids have to mate with Ma and Fb's, for the same reason.

M1 mates with F7 and F8, four kids with each gives eight kids.
M2 mates with F7 and F8, four kids with each gives eight kids.
Total 16, so far.

F1 and F2 mate each mate with M7 and M8.
16 kids from those unions giving us 32 grandkids now.

M3 and M4 each mate with F5 and F6, giving us 16 more kids, and a running total of 48 grandchildren.

F3 and F4 each mate with M5 and M6, giving us yet another batch of 16 grandkids, and a running total of 64.

How'm I doing so far?

THEN; M1 and M2 mate with Fb (Fa was their mother). This gives us eight more kids.
F1 and F2 mate with Mb (Ma was their father). Eight more.
Running total is now at 64 plus 16, is 80.

M3 and M4 mate with Fa, and F3 and F4 mate with Mb.
Running total is 80 plus 16, is 96.

M5 and M6 mate with Fb, and F5 and F6 mate with Ma.
M7 and M8 mate with Fa, and F7 and F8 mate with Ma.

Running total is now 96 plus 32, is 128.

That's 128 grandchildren, 16 children and the 4 originals. 148 people.
I tried doing it exactly the same way and it started working out so I guessed that'd have to be it and never calculated to get the final numbers...

But since you bothered it'll have to be this