Hi guys! I'm doing a homework problem asking to find the general formula of a sequence of numbers and I'm having a really tough time trying to figure out the numerator. The sequence is as follows where n=1 : (8/(1^{2}+1)) , (1/(2^{2}+ 1)), (8/(3^{2}+ 1)), (1/(4^{2}+ 1)) ...<br><br>I understand the numerator is just n^{2}+ 1 but how do I make numbers alternate like that? I've been at it for a while and I just cant seem to get it.<br><br>Thanks for the help!