Here we go again.
Though Patterson (Ashley Johnson) made solving this clue look easy, it wasnt quite so simple.
Heres what he initially told me about this tattoo.

Credit: Paul Sarkis/NBC
It leads to our first big international case, Gero said of the 43-digit sequence.
While it is a fictionalspecificlocation, the answer really does take you somewhere in the world.
Anybody that is a lover of numbers will probably lean into this one a little bit.

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My immediate guess was the Fibonacci sequence.
Maybe, maybe thats it, Gero responded.
Maybe thats not the most famous number in the world.

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Lets ignore him for a moment there, because Im so sure the Fibonacci sequence is right.
I wasnt alone in that theory.
Heres an exchange with my editor after I talked to Gero.

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Me: What the [insert inappropriate language here]?!
Me: Why would you do that?
Me: You told me the answer!

Me: Oh right.
you’re able to also see that I take my puzzle solving very seriously.
Lets take a closer look:
Searches: Fibonacci sequence.

Gets more desperate: Cryptogram solver.
See, the simplest tattoo gives me the most stress!
another editor thought the most famous number was not the Fibonacci sequence, but Pi.

But I ignored that at the time.
Fortunately, that would come back to help me.
You said if I knew the most famous number sequence in the world, it would help.
Now, there have been differing opinions on this.
My boss says Pi.
The Internet is leading me (likely astray) to Catalan.
Just give me one more clue on where to start because Im getting frustrated.
Yes, I caved, and wrote to my favorite mustache twirling EP.
Gero was all too ready with a witty response.
Your boss is really smart.
Lets look at these numbers lined up alongside Pi.
Theyre so very similar, but look like gibberish after the first few numbers.
But if you deduce whats missing, youll get your answer… at least part of it.
We didnt just send you the number on purpose.
The whole thing is slightly helpful.
But there are two dots and two arrows pointing different ways.
Since I know this is a location, this must be longitude and latitude.
Or, to be more specific, 41.55792 (latitude) 38.87512 (longitude).
Seems odd that theyd be in the middle of the Black Sea.
Geros response:
Nice!!!
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