J> 3 2 + 1 a 3
Q} 4 3 + 3 a 6
w 5 4 + 6 a 10
® 6 5 + 10 a 15
® 7 6 + 15 a 22
$ 8 7 + 22 2 30
fl 9 8 + 30 a 38
a 10 9 + 38 2 47
When you add a vertex, the number of
edges also increases. But (except when
going from 0 vertices to l or from one
vertex to two) the increase in edges is
always greater than the increase in
vertices.