Template:Seal triangles Elm and Lime/Lime

 

💧    triangle Lime (~A034253)    row sums Heather (~A034343)
k n	0	1	2	3	4	5	6	7	sums
0	1								1
1	0	1							1
2	0	1	1						2
3	0	1	2	1					4
4	0	1	3	3	1				8
5	0	1	4	6	4	1			16
6	0	1	6	12	11	5	1		36
7	0	1	7	21	27	17	6	1	80