OFFSET
1,9
LINKS
M. Josuat-Verges, J.-C. Novelli and J.-Y. Thibon, The algebraic combinatorics of snakes, arXiv preprint arXiv:1110.5272, 2011
EXAMPLE
The triangle begins:
0
0 0
1 1 1
0 1 2 3
53 53 52 50 47
...
The three triangles together:
0 0 1
0 0 0 0 0 1
1 1 1 1 1 1 1 1 0
0 1 2 3 3 4 5 6 6 7 8 8
53 53 52 50 47 47 44 40 35 29 29 23 16 8 0
CROSSREFS
KEYWORD
AUTHOR
N. J. A. Sloane, Dec 23 2011
STATUS
approved