OFFSET
1,7
LINKS
M. Josuat-Verges, J.-C. Novelli and J.-Y. Thibon, The algebraic combinatorics of snakes, arXiv preprint arXiv:1110.5272, 2011
EXAMPLE
Triangle begins:
1
0 1
1 1 0
6 7 8 8
29 23 16 8 0
...
CROSSREFS
KEYWORD
AUTHOR
N. J. A. Sloane, Dec 23 2011
STATUS
approved