ChatGPT got it!
"It seems like the values are decreasing and getting closer to zero. Additionally, the values are following a certain pattern where each subsequent value is approximately one-third of the previous value.
This suggests an exponential decay pattern. Specifically, it seems the values are being generated by the function:
f(n)=1/(3ˆn)
where n represents the position in the sequence (starting from 0)."