I would really appreciate it if I could get those...if even possible.

Fourier/sinesum is way beyond my current capacity to comprehend/make on my own.

Thanks.

Peace through sharing.
-S

you can see the formulas here https://www.dspguide.com/ch13/4.htm
here's a little patch to generate the cosinesum message generate_square_wave.pd

@seb-harmonik-ar
Thank you for the help. Got it working. Much appreciated.
Thanks, again.
Stay safe
p.s. the patch/generator you included is Really cool..