OFFSET
1,2
LINKS
R. J. Mathar, Topologically Distinct Sets of Non-intersecting Circles in the Plane, arXiv:1603.00077 [math.CO], 2016.
EXAMPLE
Triangle begins:
1,
2,1,
11,2,1,
44,14,2,1,
169,66,14,2,1,
609,323,70,14,2,1,
2253,1431,356,70,14,2,1,
8779,6320,1695,361,70,14,2,1,
36319,27420,8081,1739,361,70,14,2,1,
...
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
N. J. A. Sloane, Jan 20 2017
STATUS
approved