OFFSET
0,5
LINKS
G. Badkobeh, G. Fici, Z. Lipták, On the number of closed factors in a word, in A.-H. Dediu et al., eds., LATA 2015, LNCS 8977, 2015, pp. 381-390. Available at arXiv, arXiv:1305.6395 [cs.FL], 2013-2014.
Gabriele Fici, Open and Closed Words, in Giovanni Pighizzini, ed., The Formal Language Theory Column, Bulletin of EATCS, 2017.
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Dec 28 2017
STATUS
approved