Afer3 is the sum of 3 and the previous(2+3) 5 plus the previous 3 is 8 8 and the previous 5 is 13 13 and the previous 8 is. 21 21 and the previous 13. Is 34 34+ 21 = 55 55+ 34 = 89
He adds a higher number to the original summed number every time:
3(+2), 5(+3), 8(+5), 13(+8), 21(+13), 34
From +2 to +3 there is a difference of 1. From +3 to +5 there is a difference of 2. Observe how the numbers increase From +5 to +8 there is a difference of 3. Etc...
