#P1607. Tetrahedron
Tetrahedron
Description
Generate three integers a, b, and c in [1,n] with equal probability independently, and use them as the three right-angle side length of a right-angled tetrahedron. Find the expectation of the reciprocal square of the distance from the right-angle apex to the slope (Euclidean distance).
For each test case, output a line containing the answer mod 998244353.
Input Format
In the first line, you should read an integer T denoting the number of test cases.
In every test case, the only line will include an integer n.
It is guaranteed that T is no larger than and n is no larger than .
Output Format
For each test case, output the only line containing just one integer denoting the answer mod 998244353.
3
1
2
3
3
124780546
194103070
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