OFFSET
0,13
COMMENTS
Row sums give A000088.
LINKS
FindStat - Combinatorial Statistic Finder, The number of acyclic orientations of a graph.
EXAMPLE
Triangle begins:
1,
1,
1,1,
1,1,0,1,0,1,
1,1,0,2,0,1,0,2,0,0,0,1,0,1,0,0,0,1,0,0,0,0,0,1,
...
CROSSREFS
KEYWORD
nonn,tabf
AUTHOR
Christian Stump, Oct 15 2015
STATUS
approved