hermann on Tue, 05 Dec 2023 16:12:37 +0100 |
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Re: number of ways of writing a nonnegative integer n as a sum of 3 squares (zero being allowed). |
On 2023-12-04 08:27, Markus Grassl wrote:
It's not directly answering the question, but there is also the sequence https://oeis.org/A000164 which is described as number of triples of integers [ i, j, k] such that i >= j >= k >= 0 and n = i^2 + j^2 + k^2. Markus
Thank you for that oeis sequence.I would be interested in slightly different number with i >= j >= k but k > 0.
Is that sequence known as well?(for only two squares we know that #(n=j^2+k^2, j >= k > 0) = 2 for odd semiprimes)
Regards, Hermann.