OFFSET
1,3
LINKS
V. Pilaud and J. Rué, Analytic combinatorics of chord and hyperchord diagrams with k crossings, arXiv preprint arXiv:1307.6440 [math.CO], 2013.
EXAMPLE
Triangle begins:
1;
0, 8;
0, 1, 82;
0, 0, 43, 868;
0, 0, 11, 920, 9726;
0, 0, 1, 590, 15524, 113536;
0, 0, 0, 243, 15904, 243040, 1366570;
...
CROSSREFS
KEYWORD
AUTHOR
N. J. A. Sloane, Nov 22 2013
STATUS
approved