



 
Hi Richard, In this sequence the numerators are powers of 3 (with alternating signs) and the denominators are powers of 2. Ignoring the alternating sign the numerators and denominators are
What values belong in the n column? To include the alternating sign multiply by (1)^{n} or (1)^{n+1}, whichever one works. I hope this helps,  


Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences. 