login

A173539 as a triangular array

0
02
003
0234
00045
023456
0030567
02045678
003406789
02345678910
0000507891011
023456789101112
00345608910111213
020406789

A173539 as a square array

00000000000000
2020202020202
330330330330
44404440444
5555055550
666660666
77777707
8888888
999999
10101010
111111
1212
13
00000000000000
2020202020202
330330330330
44404440444
5555055550
666660666
77777707
8888888
999999
10101010
111111
1212
13