Template:Seal pyramid/Ivy/depth/sum

v a	0	1	2	3	4	5	6	7	Σ
0	1								1
1		1							1
2		1	2						3
3		1	4	6					11
4		1	6	18	26				51
5		1	8	36	104	158			307
6		1	10	60	260	790	1330		2451
7		1	12	90	520	2370	7980	15414	26387