OFFSET
0,1
COMMENTS
A word w is n-similar if every consecutive pair of identical-length contiguous blocks within w agrees on at most n positions.
REFERENCES
A. Baranwal, T. Clokie, et al., Similarity of words, in preparation, November 2019.
FORMULA
It is known that a(n) >= 8n+1 and a(n) <= 10n+5 for all n >= 0.
EXAMPLE
Here are the lexicographically least longest words for n = 0, 1, ..., 9:
0: 010
1: 000111000
2: 00000101111100000
3: 0000000101011111110000000
4: 000000000101010111111111000000000
5: 00000000000101010101111111111100000000000
6: 0000000000000101010101011111111111110000000000000
7: 000000000000000101010101010111111111111111000000000000000
8: 00000000000000000101010101010101111111111111111100000000000000000
9: 000000000000000000010110010101011111111111111111110011000000100000000000000
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Jeffrey Shallit, Nov 30 2019
STATUS
approved