Question: how to display a matrix?

A small question:

When I send the following command, I can see the matrix of 10 x 2:

Matrix( [seq( [ n , sum( evalf(1/(n+1)), k=(1/3*n)..(2/3*n) )], n= 1..10)]);


However, when I want to evaluate for  n=1..50.. I cannot see any numbers but only a description of a matrix.

How may I can I see the matrix for n=1..50?


Thanks a lot for your attention,



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