OFFSET
0,3
LINKS
G. Alkauskas, The modular group and words in its two generators, arXiv:1512.02596 [math.NT], 2015-2017.
G. Alkauskas, The modular group and words in its two generators, Lithuanian Math. J. 57(1) (2017), 1-12.
Jason Bell and Marni Mishna, On the Complexity of the Cogrowth Sequence, arXiv:1805.08118 [math.CO], 2018.
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Sep 14 2016
EXTENSIONS
Name changed, terms a(12) and beyond added using g.f. from Alkauskas by Andrey Zabolotskiy, Aug 03 2022
STATUS
approved