So, in Pascal's triangles, the number in (#row, #column) is the binomial coefficient of C(#row, #column)

Therefore, if given row, col, the number(row, col) can be calculated in the following way

```
previousNumber = number(row, col - 1)
number(row, col - 1) = previousNumber * (row - col + 1) / col
```

A javascript implementation is like this

```
var getRow = function(rowIndex) {
var currentRow = new Array(rowIndex + 1).fill(1)
for (i = 1; i <= rowIndex / 2; i ++) {
const currentCol = (currentRow[i - 1] * (rowIndex - i + 1)) / i
currentRow[i] = currentRow[rowIndex - i] = currentCol
}
return currentRow
}
```