Final answer:
The student's question seems to mix elements from various stories. In 'A Grain as Big as a Hen's Egg', there is no mention of a king searching for something. The story more likely referenced is 'The Queen Bee' by the Grimm Brothers, which involves princes, not a searching king.
Step-by-step explanation:
In the story 'A Grain as Big as a Hen's Egg,' the king is not searching for anything in particular; the reference made in the question seems to be conflating elements from different stories. One such element is reminiscent of a different story involving a king and an exponentially growing number of grains of rice on a chessboard, which demonstrates exponential growth rather than a search for something.
Additionally, to provide an accurate and relevant response based on the information provided, it appears the student may have intended to reference the story 'The Queen Bee' by the Grimm Brothers. In this tale, there is no king searching; instead, the protagonists are princes performing tasks with the aid of animals to lift a curse on a castle.