rectangular number造句

例句与造句

1. :The term " rectangular number " does not seem to have a standard definition.
2. But other sources use rectangular number to mean a composite number, or, more rarely, a composite number that is not a square number.
3. Composite numbers have also been called " rectangular numbers ", but that name can also refer to the pronic numbers, numbers that are the product of two consecutive integers.
4. Looking for references, I found several sources (,, ) where the term is used to refer to an integer of the form " n " ( " n " + 1 )-so the first few rectangular numbers using this definition are 2, 6, 12, 20, 30.
5. It's difficult to find rectangular number in a sentence. 用rectangular number造句挺难的