Q: Is 138 a Catalan Number?

 A: No, the number 138 is not a Catalan number.

Here are the next few Catalan numbers

429 1,430 4,862 16,796 58,786 208,012

Are any of the surrounding numbers a Catalan number?

Let's take a look and see...

Number 136137139140
Catalan? nononono

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