According to this new absolute-bonkers TGP rule, you don’t have to get fixated on multiples of 4… just avoid the # of players that results in not having a majority of groups as 4-player.
So avoid 9, 10, 13, 14, 17, and 21. Above 21 and you’re good no matter the number.
4 3 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
4 3 3 4 4 3 4 4 4 4 4 4 4 4 4 4 4 4
3 3 3 4 3 3 4 4 3 4 4 4 4 4 4 4 4
3 3 3 4 3 3 4 4 3 4 4 4 4
3 3 3 4 3 3 4 4 3
3 3 3 4 3
3