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A140639
Number of 4-noncrossing RNA structures with arc-length => 4.
0
1, 1, 1, 1, 2, 5, 15, 51, 179, 647, 2397, 9081, 35181, 139307, 563218
OFFSET
1,5
COMMENTS
Table 2, p. 30 of Han and Reidys. See diagrams p. 31. Combinatorial formulas and asymptotic results are also given.
CROSSREFS
KEYWORD
nonn
AUTHOR
Jonathan Vos Post, Jul 07 2008
STATUS
approved