# Tk_rgb_sequences_2.py

# Tk_rgb_sequences_2.py

from tkinter import *
from PIL import Image, ImageTk
import math
from itertools import combinations

ww = 500
hh = 500

sz = 10

root = Tk()
root.geometry("%dx%d+0+0"%(ww,hh))
canvas = Canvas(root, width=ww, height=hh)
canvas.pack()


t = range(0,256,5)
TTT = []
for r in t:
    for g in t:
        for b in t:
            TTT += [(r, g, b)]
# TTT.sort(key=sum)
TTT = TTT[1:-1]+TTT[::-1]


def make_rgb():
    return '#%02X%02X%02X'%(r,g,b)

i = 0
seq = 1 # sequences
sub = 1
while 1:
    ttt = TTT[:]
    seq += 1
    sub = seq
    print (seq)
    canvas.delete('all')
    for y in range(0,hh,sz):
        L = len(ttt)
        for x in range(0,ww+1,sz):
            r,g,b = ttt.pop(sub%L)
            L = L - 1
            sub = sub + int(L/100) + seq
            canvas.create_rectangle((x, y, x-sz, y+sz), fill=make_rgb(), width=0)
    canvas.update()