The upper-trimmed subsequence of is the sequence obtained by dropping the first occurrence of for each . If is a fractal sequence, then .

# Upper-Trimmed Subsequence

## See also

Lower-Trimmed Subsequence## Explore with Wolfram|Alpha

## References

Kimberling, C. "Fractal Sequences and Interspersions."*Ars Combin.*

**45**, 157-168, 1997.

## Referenced on Wolfram|Alpha

Upper-Trimmed Subsequence## Cite this as:

Weisstein, Eric W. "Upper-Trimmed Subsequence."
From *MathWorld*--A Wolfram Web Resource. https://mathworld.wolfram.com/Upper-TrimmedSubsequence.html