Template:Seal pyramid/Ivy/novelty/sum

d a	0	1	2	3	4	5	6	7	Σ
0	1								1
1		1							1
2		2	1						3
3		4	6	1					11
4		8	28	14	1				51
5		16	120	140	30	1			307
6		32	496	1240	620	62	1		2451
7		64	2016	10416	11160	2604	126	1	26387