OFFSET
0,6
COMMENTS
Row sums give A000108.
LINKS
Alois P. Heinz, Rows n = 0..10, flattened
FindStat - Combinatorial Statistic Finder, The number of elements smaller than the given Dyck path in the Tamari Order.
Wikipedia, Tamari lattice.
FORMULA
EXAMPLE
Triangle begins:
1;
1;
1,1;
1,2,1,0,1;
1,3,2,2,2,0,2,0,1,0,0,0,0,1;
1,4,3,5,4,2,4,0,5,2,0,2,0,3,0,1,0,0,2,0,0,0,2,0,0,0,0,1,0,0,0,0,0,0,0, 0,0,0,0,0,0,1;
...
CROSSREFS
KEYWORD
nonn,tabf
AUTHOR
Christian Stump, Oct 19 2015
EXTENSIONS
Two terms (for rows 0 and 1) prepended by Alois P. Heinz, Nov 15 2015
STATUS
approved