OFFSET
1,2
COMMENTS
In the Allombert et al. (2018) paper the sequence starts with a(0) = the empty string.
REFERENCES
Allombert, Bill, Nicolas Brisebarre, and Alain Lasjaunias. "On a two-valued sequence and related continued fractions in power series fields." The Ramanujan Journal 45.3 (2018): 859-871. See W_n in Theorem 2.
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Nov 09 2019
STATUS
approved