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A158906 as a triangular array

1
21
301
4101
50001
611001
7000001
81010001
901000001
10100100001
110000000001
1211101000001

A158906 as a square array

123456789101112
10101010101
1001001001
100010001
10000100
1000001
100000
10000
1000
100
10
1
123456789101112
10101010101
1001001001
100010001
10000100
1000001
100000
10000
1000
100
10
1