You might have seen these, but they may help others too.
A couple of interesting links about CD4017 dividers.
An article by Mid Century Modular. CMOS Clock Dividers
Also this thread on electro-music.com has YuSynth stripboard layouts.
The clock divider link is near the bottom.
Yusynth on Stripboard electro-music.com :: View topic - Yusynth on Stripboard