If u cut that equil triangle in half.......................u get two triangles..........of equal size.......the line in the middle............is 3/2......................like 2, 3.............backwards................or 3 and 2.........like the number of primes on either side of 50................from 40 - 60.........................3/2 = 1.5...........like 15......................like 3 fives....................like 5/3 = 1.666..............................like the 3 fives........from the square root of 13.............which starts out...........3.60555...........the 1st 6 numbers of it....