OFFSET
1,3
LINKS
J. E. Koehler, Folding a strip of stamps, J. Combin. Theory, 5 (1968), 135-152.
Stéphane Legendre, Illustration of initial terms
S. Legendre, Foldings and Meanders, arXiv preprint arXiv:1302.2025, 2013.
S. Legendre, Foldings and Meanders, Aust. J. Comb. 58(2), 275-291, 2014.
W. F. Lunnon, A map-folding problem, Math. Comp. 22 (1968), 193-199.
CROSSREFS
KEYWORD
nonn
AUTHOR
EXTENSIONS
More terms from Stéphane Legendre (2013) added by N. J. A. Sloane, Mar 30 2013
STATUS
approved