Try another version of this question Write an explicit formula for the sequence:
`a_n = `
Box 1: Enter your answer as an expression. Example: 3x^2+1, x/5, (a+b)/c
`{-1/7, 1/(8), -1/(9), 1/(10), -1/(11), 1/(12), ...}`
Be sure your variables match those in the question `(-1)^n/(n+6)`