function step(count: number, interation: number): number {
  if (count === 1) return interation
  if (count % 2 === 0) { // Even
    return step(count / 2, interation + 1)
  } else {
    return step((3 * count) + 1, interation + 1)
  }
}

export function steps(count: number): number {
  if (!count || count < 1 || Math.trunc(count) !== count)
    throw new Error('Only positive integers are allowed')
  return step(count, 0)
}