import time
from neopixel import Neopixel

PIN  =       13
NUMPIXELS =  64          # NeoPixel ring size
pixDELAY  =  100         # Delay for pixel persistence

pixels = Neopixel(NUMPIXELS, 0, PIN, "GRB")

def function(AA, NN, BB):
  x = AA * NN + BB
  pixels.set_pixel(x-1, (255, 0, 0))

# Start Function
if __name__ == '__main__':

  for n in range(0,8):
    a=8
    b=0
    function(a, n, b)

    a=8
    b=1
    function(a, n, b)

    a=9
    b=1
    function(a, n, b)

    pixels.show()
    time.sleep_ms(pixDELAY)