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A204181 as a triangular array

1
11
131
1001
10501
100001
1007001
10000001
100090001
1000000001
100001100001
100000000001
10000013000001
1000000

A204181 as a square array

11111111111111
1300000000000
105000000000
10070000000
1000900000
1000011000
100000130
100000
10000
1000
100
10
1
11111111111111
1300000000000
105000000000
10070000000
1000900000
1000011000
100000130
100000
10000
1000
100
10
1