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Lower-Trimmed Subsequence

The lower-trimmed subsequence of $x=\{x_n\}$ is the sequence $V(x)$ obtained by subtracting 1 from each $x_n$ and then removing all 0s. If $x$ is a Fractal Sequence, then $V(x)$ is a Fractal Sequence. If $x$ is a Signature Sequence, then $V(x)=x$.

See also Signature Sequence, Upper-Trimmed Subsequence


References

Kimberling, C. ``Fractal Sequences and Interspersions.'' Ars Combin. 45, 157-168, 1997.




© 1996-9 Eric W. Weisstein
1999-05-25