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A073424 as a triangular array

0
10
100
1000
10000
100000
1000000
10000000
100000000
1000000000
10000000000
100000000000
1

A073424 as a square array

0111111111111
00000000000
0000000000
000000000
00000000
0000000
000000
00000
0000
000
00
0
0111111111111
00000000000
0000000000
000000000
00000000
0000000
000000
00000
0000
000
00
0