OFFSET
1,4
COMMENTS
Row sums give A000088, n >= 1.
LINKS
FindStat - Combinatorial Statistic Finder, The number of spanning trees of a graph.
EXAMPLE
Triangle begins:
1,
1,1,
2,1,0,1,
5,2,0,1,1,0,0,0,1,0,0,0,0,0,0,0,1,
...
CROSSREFS
KEYWORD
nonn,tabf
AUTHOR
Christian Stump, Oct 15 2015
STATUS
approved