To prove this sequence does not contain a perfect square
45911
Prove that none of $\{11, 111, 1111,\dots \}$ is the perfect square of an integer
93948
Is my proof correct? $p_1p_2p_3\cdots p_n+1)$ cannot be the square of an integer
37389
Why is this sequence of functions not uniformly convergent?
99606
Prove or disprove there exists a set of four numbers out of the $48$ positive integers of which product is a perfect square
60024
Proof that a sequence is convergent
130476
Prove that every terms of a sequence defined by a recurrence relation is a perfect square.
14489
Showing that a sequence is monotone and thus convergent
107399
A sequence and convergence
109305
Non-existence of natural numbers such that $\sqrt{n} +\sqrt{n+1} <\sqrt{x} +\sqrt{y} <\sqrt{4n+2}$
19588
$n!+1$ being a perfect square
149071
Let $d$ be any positive integer not equal to $2, 5,$ or $ 13$ , then $\exists a, b \in \{2, 5, 13, d\}$ such that $ab − 1$ is not a perfect square?
135450
Prove $x^n$ is not uniformly convergent
90074
Show that the sequence $1,2,3,4,5,6,7,8,9,1,0,1,1,1,2,1,3,1,4,1,5,1,6,1,7,1,8,1,9,2,0,2,1,\cdots$ isn't periodic
145558
Prove that $2^n+3^n $ is never a perfect square
151226
Why is the sequence $x(n) = \log n$ **not** Cauchy?
154796
Completeness of sequence of reals with finitely many nonzero terms
45788
$n$-th digit in the sequence of natural numbers