OFFSET
1,13
COMMENTS
Row sums give A000041, n >= 1.
LINKS
FindStat - Combinatorial Statistic Finder, Number of integral Gelfand-Tsetlin polytopes with prescribed top row and integer partition weight.
J. De Loera and T. B. McAllister, Vertices of Gelfand-Tsetlin polytopes, arXiv:math/0309329 [math.CO], 2003, MathSciNet:2096742.
EXAMPLE
Triangle begins:
1,
1,1,
1,1,1,
1,1,1,1,1,
1,2,0,2,0,1,1,
1,2,1,2,0,1,1,1,0,1,1,
1,3,0,2,2,1,1,1,0,0,1,1,0,1,1,
1,3,2,2,2,0,2,0,3,0,0,2,0,0,1,0,1,0,1,0,1,1,
...
CROSSREFS
KEYWORD
nonn,tabf
AUTHOR
Christian Stump, Nov 02 2015
STATUS
approved