5...........is dead center..................8 ways to make 15....................1.5..............3/2 = 1.5..................from the critical line to .....2, 0...........is a distance of one and a half...............the 1st 5 primes.............the 1st 5 non primes..........connect single digits to double digits..........like the c line itself.........1/2..............................15 + 15 = 30................two 30s.........in the 1st 4 primes in double digits................11 + 19 = 30.....13 + 17 = 30............................1st 4 with 2 digits..........1/2 + 14i.............