https://susam.net/primegrid.html#1-200-330 https://susam.net/primegrid.html#1-200-330 zoom out, then play around with cols +/-1 and observe the pattern change.

https://susam.net/primegrid.html#1-200-330 https://susam.net/primegrid.html#1-200-330 zoom out, then play around with cols +/-1 and observe the pattern change. I observe the pattern from -7 to +5; same on #1-200-420