List questions from sums-of-squares

Published on 28 Dec 2017 - 15:02

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Calculating the Sum of Squares between in ANOVA table

Published on 29 Dec 2017 - 18:49

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Is there an infinite number of numbers like $1600$?

Published on 25 Mar 2026 - 17:20

159

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Can this be continued forever?

Published on 25 Mar 2026 - 17:26

68

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Is there a pattern defining the existence of root integer distances in an isometric grid?

Published on 04 Jan 2018 - 20:37

45

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Confirmation of Proof: $\forall n \in \mathbb{N}^*, \ p = 4261 + 2308n : \text{prime} \Rightarrow p = \{a^2 + b^2 \mid \gcd(a, b) = 1\}$

Published on 10 Jan 2018 - 5:46

70

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How to find the sum of the Series $\sum_{n \in \Bbb{Z}} \vert c_n \vert^2$ which terms are the special integral representations

Published on 12 Jan 2018 - 3:22

18.8k

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Number of integer solutions of $x^2 + y^2 = k$

Published on 14 Jan 2011 - 15:57

1.7k

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Prove that $n$ is a sum of two squares?

Published on 28 Mar 2011 - 5:53

3.8k

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Prove that if $p$ is an odd prime that divides a number of the form $n^4 + 1$ then $p \equiv 1 \pmod{8}$

Published on 17 Apr 2011 - 1:07

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The sum of the first $n$ squares is a square: a system of two Pell-type-equations

Published on 20 Oct 2011 - 11:06

3.3k

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Integral solutions of $x^2+y^2+1=z^2$

Published on 22 Oct 2011 - 22:43

913

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Sum of squares are closed under products and squaring.

Published on 07 Dec 2011 - 5:40

20.9k

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Diophantine equation $a^2+b^2=c^2+d^2$

Published on 04 Jun 2012 - 3:44

2.2k

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Fermat's theorem on sums of two squares

Published on 10 Jul 2012 - 12:12

List Question

sum of square derivative

Calculating the Sum of Squares between in ANOVA table

Is there an infinite number of numbers like $1600$?

Can this be continued forever?

Is there a pattern defining the existence of root integer distances in an isometric grid?

Confirmation of Proof: $\forall n \in \mathbb{N}^*, \ p = 4261 + 2308n : \text{prime} \Rightarrow p = \{a^2 + b^2 \mid \gcd(a, b) = 1\}$

How to find the sum of the Series $\sum_{n \in \Bbb{Z}} \vert c_n \vert^2$ which terms are the special integral representations

Number of integer solutions of $x^2 + y^2 = k$

Prove that $n$ is a sum of two squares?

Prove that if $p$ is an odd prime that divides a number of the form $n^4 + 1$ then $p \equiv 1 \pmod{8}$

The sum of the first $n$ squares is a square: a system of two Pell-type-equations

Integral solutions of $x^2+y^2+1=z^2$

Sum of squares are closed under products and squaring.

Diophantine equation $a^2+b^2=c^2+d^2$

Fermat's theorem on sums of two squares

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