OFFSET
1,5
LINKS
E. Deutsch and M. Noy, Statistics on non-crossing trees, Discrete Math., 254 (2002), 75-87 (see Th. 6).
EXAMPLE
Triangle begins:
1
0 1
0 2 1
0 0 4 1
0 0 3 6 1
0 0 4 10 8 1
0 0 0 12 21 10 1
0 0 0 12 32 28 12 1
CROSSREFS
KEYWORD
AUTHOR
N. J. A. Sloane, Jan 17 2012
STATUS
approved