2/3, 1/3, 2/9, 1/6

Create an explicit formula for this.
Is it an arithmetic or geometric sequence?

1 answer

A quick check shows it is neither arithmetic nor geometric, so mess around with it a bit

how about (1/18)( 12, 6, 4, 3, ....) , 18 is the LCD
notice :
12/1 = 12
12/2 = 6
12/3 = 4
12/4 = 3

so it looks like
term(n) = (1/18)(12/n) = 2/(3n)
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