you don't need a function, plain select is possible; check solutions by @monadius or me ;)

When doing the SQL version it was not clear that it was a function that took in a paramater. Did a select clause with no luck.

I find that my solution gives the following error message on Big Random Tests:-
ValueError: Exceeds the limit (4300) for integer string conversion

For example, this happens with n = 878173. When I test this on my computer it returns a value which has a length
of 107246. I don't have a string conversion in my solution so must assume that it is something in your test harness.

Chris

Lambda Calculus translation

approved a long time ago

obsolete

approved some time ago :)

recursion is too inefficient for this problem. you are calculating the same terms numerous times

Good day! I solved this task in recursive. Test is passed, but when I press button "Submit" I get error about timeout.

has been approved

Ok

You must return a BigInt. BigInt does not have exponential notation.

fixed + added note in initial solution

what does that mean ? give more details

recursion is very inefficient for that problem. not a kata issue