Marinada '25

[lang=hr] Izračunaj $$\sum_{k = 0}^{\infty} \frac{1}{(4k + 1)(4k + 2)(4k + 3)(4k + 4)}.$$ [/lang] [lang=en] Calculate $$\sum_{k = 0}^{\infty} \frac{1}{(4k + 1)(4k + 2)(4k + 3)(4k + 4)}.$$ [/lang]