Has anyone ever posted, or seen online, an LED chaser (one direction, one LED at a time) that will handle up to 100 LEDs while requiring only two CD4017s, plus 20 transistors and a handful of resistors? The length can actually be arbitrary. As with all chasers, it also needs a clock oscillator, and maybe a power-on reset, both of which are made here with a Schmitt trigger quad NAND package. I'll post the basic 100 LED version here. The arbitrary length version requires a few more parts. If this is a common approach, I hope you'll forgive my ignorance. I am not an LED chaser guy, normally.