OFFSET
0,1
COMMENTS
Is this A005680 shifted one place left? [From R. J. Mathar, Oct 20 2008]
Agrees with A005680 shifted one place left for at least n <= 1000000. - Sean A. Irvine, Nov 08 2020
REFERENCES
M. Lothaire, Combinatorics on Words. Addison-Wesley, Reading, MA, 1983, p. 26.
CROSSREFS
KEYWORD
nonn
AUTHOR
STATUS
approved