>>11772046I did come up with the equation
1 triangle in 2 = 3 total triangles
1/3 = 6 triangles
1/4 = 10
1/5 = 15
(3+3=6, 6+4=10, 10+5=15, 15+6=21, ...)
Rather it's more of a pattern than an equation. Someone tell me if I'm retarded. To be fair I am still in bed. Either way id need a pencil to count all the triangles from here, but at least I don't have to count them one by one.