createCanvas(400, 400);

  background(200);

  textAlign(CENTER);

  textSize(36);

  let numRows = 8;

  for (let i = 0; i < numRows; i++) {

    let numCombos = numRows - i;

    let textH = textAscent()

    let textW = 50;

    let totalW = numCombos * 45;

    let start = (width - totalW ) / 2

    for (let j = 0; j < numCombos; j++) {

      let s = combinations(numCombos,j).toString();

       text(s, start + textW * j, height - (textH * i))

    }

  }

​

  }

  function draw() {

}

​

function factorial(n) {

  total = 1;

  for (let i = 1; i <= n; i++) {

    total *= i;

  }

  return total;

}

​

function combinations(n, k) {

  return factorial(n) / (factorial(k) * 

                        factorial(n-k))

}