Y \ X
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
13470
13469
13468
13467
13466
13465
13464
13463
13462
13461
13460
13459
13458
13457
13456
13455
13454
13453
13452
13451
13450