Feynman's squares Richard Phillips Feynman was a well-known American physicist and a recipient of the Nobel Prize in Physics. He worked in theoretical physics and pioneered the field of quantum computing. Recently, an old farmer found some papers and notes that are believed to have belonged to Feynman. Among notes about mesons and electromagneti…

feymanCount.js

function countSquares(n){
  let value = 0;
  for(var i = 1; i<=n; i++){
   value +=  i * i;
  }
  return value;
}

function countSquares(n) { return (n*(n+1)*((n<<1)+1)/6); }