The Little Gate Sequencer is the creation of PHOBoS at the electro-music forum.He describes it as:

A simple gate sequencer based around a CD4017. Using toggle switches with center position to choose between on/off/reset for every step. There's an on/off switch which makes the output low, and a short/long switch to choose between short pulses or 1 long one when several steps in a row are turned on.

I created a layout based on two boards. One holding the switches and indicators and the second the CMOS.