OFFSET
2,1
LINKS
James R. Mahoney, Tree Graphs and Orthogonal Spanning Tree Decompositions, PhD Dissertation, Portland State Univ., 2016.
EXAMPLE
Triangle begins:
3,1,
6,2,3,1,
10,8,9,4,1,
15,20,25,4,10,5,1,
21,40,60,24,25,15,6,1,
28,70,126,84,70,6,35,21,7,1,
36,112,238,224,196,48,77,56,28,8,1,
45,168,414,504,504,216,189,8,126,84,36,9,1,
55,240,675,1008,1170,720,525,80,261,210,120,45,10,1,
...
CROSSREFS
KEYWORD
nonn,tabf
AUTHOR
N. J. A. Sloane, Jul 07 2017
STATUS
approved