JSFiddle - React, Tailwind, and code Playground

JavaScript

const max = 200;
const min = 40;
const focus = 0.4; // 0 - 1

let numbs = [];

function randomFocusBorders(max, min) {
  const middle = (max - min) / 2;
  let x = Math.floor(middle * Math.pow(Math.random(), focus));
  if (Math.random() < 0.5) x = middle - x;
  else x = middle + x;
  x += min;
  return x;
}

for (let i = 0; i < 100; i++) {
  numbs.push(randomFocusBorders(max, min));
}

numbs.sort((a, b) => {
  return a > b ? 1 : -1;
});

console.log(numbs);