Integer squares of the form $x^4+x^3+x^2+x+1$
134121
Determining all the positive integers $n$ such that $n^4+n^3+n^2+n+1$ is a perfect square.
131108
Can $3p^4-3p^2+1$ be square number?
91560
Square Fibonacci numbers
101835
Which rationals can be written as the sum of two rational squares?
130499
How can $p^{q+1}+q^{p+1}$ be a perfect square?
42813
Square valued integer polynomial
59782
Are there any $n$ for which $ n^4+n^3+n^2+n+1$ is a perfect square?
101708
Integers can be expressed as $a^3+b^3+c^3-3abc$
83910
Integer part of $\sqrt[3]{24+\sqrt[3]{24+\sqrt[3]{24+\cdots}}}$
20443
Calculate sum of squares of first $n$ odd numbers
153647
Elementary number theory and quadratic
114863
Representing a given number as the sum of two squares.
67332
Sum of two squares modulo p
41789
Fermat's theorem on sums of two squares
32350
Compilation of proofs for the summation of natural squares and cubes
129755
Weighted sum of squares, in a finite field
134765
Is an integer a sum of two rational squares iff it is a sum of two integer squares?