A259970 Triangle read by rows: coefficients eta(n,k) arising from the study of completely transitive graphs on n nodes.
1, 0, 1, 1, 3, 3, 6, 28, 42, 21, 91, 510, 1050, 945, 315, 2820, 18631, 48360, 61845, 39060, 9765, 177661, 1351413, 4220433, 6942915, 6357015, 3075975, 615195
Offset: 1
Examples
Triangle begins: 1, 0,1, 1,3,3, 6,28,42,21, 91,510,1050,945,315, 2820,18631,48360,61845,39060,9765, 177661,1351413,4220433,6942915,6357015,3075975,615195, ...
Links
- E. Andresen, K. Kjeldsen, On certain subgraphs of a complete transitively directed graph, Discrete Math. 14 (1976), no. 2, 103-119.
- Hsien-Kuei Hwang, Emma Yu Jin, Michael J. Schlosser, Asymptotics and statistics on Fishburn Matrices: dimension distribution and a conjecture of Stoimenow, arXiv:2012.13570 [math.CO], Dec 25 2020, p. 29.