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Find the sum to n terms of the series: ...

Find the sum to `n` terms of the series: `1/(1+1^2+1^4)+2/(1+2^2+2^4)+3/(1+3^2+3^4)+`

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To find the sum to n terms of the series \[ S_n = \sum_{k=1}^{n} \frac{k}{1 + k^2 + k^4} \] we start by simplifying the general term \( t_k = \frac{k}{1 + k^2 + k^4} \). ...
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