Find all integers \( k \) such that the sequence \( (3n^2 + 3nk^2 + k^3 )_{n=1, 2, \dots} \) contains infinitely many squares.
Note: The numbering was wrong. It should be 2025-18.
Find all integers \( k \) such that the sequence \( (3n^2 + 3nk^2 + k^3 )_{n=1, 2, \dots} \) contains infinitely many squares.
Note: The numbering was wrong. It should be 2025-18.
Show that if \(X\) is a Poisson random variable with parameter \(\mu\), there exists a constant \(c>0\) such that for \(t>\mu+1\), \(\mathbb{P}(X-\mu \geq t)\geq ce^{-2t\log (1+(t+1)/\mu)}\).
The best solution was submitted by Huseyn Ismayilov (전산학부 22학번, +4). Congratulations!
Here is the best solution of problem 2025-16.
Another solution was submitted by 정서윤 (수리과학과 23학번, +3).