Find the sum of the first n terms of the series:
(i) 1.3.5 + 3.5.7 + 5.7.9 + ... + (2n - 1)(2n + 1)(2n +3)
(ii) 1/(1.3.5) + 1/(3.5.7) + 1/(5.7.9) + ... + 1/[(2n - 1)(2n + 1)(2n +3)]
I have tried many methods, but with no avail... how can i solve this while displaying working and explanations??
Go here: The On-Line Encyclopedia of Integer Sequences
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