Loops - OpenProcessing

mySketch
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function setup() {
​
  createCanvas(windowWidth, windowHeight);
  background(0)
  // noStroke()
​
​
  // i = i + 1  
  for (let i = 0; i < 25; i++) {
​
    for (let j = 0; j < 10; j++) {
​
      for (let k = 0; k < 10; k++) {
        
        fill(i / 25 * 255, j / 25 * 255, (i + j) / 25 * 255)
        circle(i * 25 + i * i+k, j * 25 + j * j + k*10, i * j+k)
        
      }
​
    }
​
​
​
  }
​
}