recurring number造句

The song became one of Nelson's recurring numbers during live performances.
The house also features doors that open into walls, staircases that lead nowhere, the recurring number 13 ( which evidence supports was added by later owners to support the claim that Sarah was eccentric ), and windows that look into other walls.
Pick up a sunflower and count the florets running into its center, or count the spiral scales of a pine cone or a pineapple, running from its bottom up its sides to the top, and you will find an extraordinary truth : recurring numbers, ratios and proportions.
It's difficult to find recurring number in a sentence. 用recurring number造句挺难的