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A079409 as a triangular array

1
10
110
1200
11100
123000
1111000
12340000
111110000
1234500000
11111100000
123456000000
1111111000000
12345670000000

A079409 as a square array

11111111111111
0121212121212
001313131313
00014141414
0000151515
000001616
00000017
0000000
000000
00000
0000
000
00
0
11111111111111
0121212121212
001313131313
00014141414
0000151515
000001616
00000017
0000000
000000
00000
0000
000
00
0