# [Element](https://github.com/PhiNotPi/Element), 10 bytes, [cracked](https://codegolf.stackexchange.com/questions/77420/find-the-program-that-prints-this-integer-sequence-robbers-thread/77433#77433)

Output:

 a(3) = 6561
 a(4) = 4294967296

There's probably only a few ways to compute this sequence in Element. I found a 9-char solution, but I figured this 10-char solution is actually more difficult. The `#` are hidden characters.

 #_####@^#`

For convenience, here's the [Try It Online](http://element.tryitonline.net/) and [Esolang wiki](https://esolangs.org/wiki/element) pages.

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The original was

 2_3:~2@^^`