login
A072660
Size of the parenthesizations obtained with the global ranking/unranking scheme A072656-A072659.
10
0, 1, 2, 2, 3, 3, 3, 3, 4, 4, 4, 3, 5, 4, 4, 4, 5, 4, 4, 6, 5, 5, 5, 5, 4, 6, 5, 4, 4, 5, 7, 6, 6, 6, 5, 5, 5, 6, 5, 5, 7, 6, 6, 6, 5, 4, 6, 5, 8, 7, 7, 7, 6, 7, 6, 6, 6, 6, 5, 7, 6, 5, 4, 6, 8, 7, 7, 7, 6, 6, 5, 7, 5, 5, 8, 6, 6, 9, 8, 8, 8, 7, 8, 7, 7, 9, 7, 7, 7, 6, 6, 5, 7, 5, 6, 8, 7, 7, 6, 6, 4, 7, 5, 9, 8
OFFSET
0,3
CROSSREFS
Cf. A072657-A072659. Permutations: A071673, A072643, A072644, A072645.
Sequence in context: A072768 A071673 A174199 * A237720 A075172 A347643
KEYWORD
nonn
AUTHOR
Antti Karttunen, Jun 02 2002
STATUS
approved