A280785 Triangle read by rows: numbers of nonintersecting circles, one marked.

1, 1, 1, 2, 2, 1, 5, 5, 2, 1, 13, 13, 6, 2, 1, 35, 35, 16, 6, 2, 1, 95, 95, 46, 17, 6, 2, 1, 262, 262, 128, 49, 17, 6, 2, 1, 727, 727, 364, 139, 50, 17, 6, 2, 1, 2033, 2033, 1029, 401, 142, 50, 17, 6, 2, 1, 5714, 5714, 2930, 1147, 412, 143, 50, 17, 6, 2, 1, 16136, 16136, 8344, 3299, 1184, 415, 143, 50, 17, 6, 2, 1

Offset: 1

Author

N. J. A. Sloane, Jan 20 2017

Keywords

• nonn
• tabl

Examples

			Triangle begins:
1,
1,1,
2,2,1,
5,5,2,1,
13,13,6,2,1,
35,35,16,6,2,1,
95,95,46,17,6,2,1,
262,262,128,49,17,6,2,1,
727,727,364,139,50,17,6,2,1,
...
		

Links

• R. J. Mathar, Topologically Distinct Sets of Non-intersecting Circles in the Plane, arXiv:1603.00077 [math.CO], 2016.

Crossrefs

Row sums are A000107.