Template:Seal pyramid/Ivy/valency/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

Same as {{Seal pyramid/Lonicera/pennon weight/sum}}, namely Maple.