OFFSET
0,3
LINKS
Andrei Asinowski, Axel Bacher, Cyril Banderier, Bernhard Gittenberger, Analytic combinatorics of lattice paths with forbidden patterns, the vectorial kernel method, and generating functions for pushdown automata, Laboratoire d'Informatique de Paris Nord (LIPN 2019).
Veronika Irvine, Lace Tessellations: A mathematical model for bobbin lace and an exhaustive combinatorial search for patterns, PhD Dissertation, University of Victoria, 2016.
EXAMPLE
Triangle begins:
1,1,
4,5,3,1,
21,30,25,14,5,1,
127,196,189,133,70,27,7,1,
835,1353,1422,1140,726,369,147,44,9,1,
5798,9713,10813,9438,6765,4037,2002,814,264,65,11,1,
41835,71799,83304,77220,60060,39897,22737,11076,4563,1560,429,90,13,1,
310572,542895,649845,630084,520455,373581,234780,129285,62127,25830,9163,2715,650,119,15,1,
...
CROSSREFS
KEYWORD
nonn,tabf
AUTHOR
N. J. A. Sloane, Aug 19 2017
STATUS
approved